Hsien; Chih-Ching
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hsien; Chih-Ching.The latest application filed is for "quick release device for releasing screw bit from socket".
Company Profile
0.93.129
- Hsien; Chih-Ching - Taichung Hsien TW
- Hsien; Chih-Ching - Taipei TW
- Hsien; Chih-Ching - Taichung TW
- Hsien; Chih-Ching - Feng Yuan Taichung TW
- Hsien; Chih-Ching - Tai-Chung Hsien TW
- Hsien; Chih-Ching - Taichung City TW
- Hsien; Chih-Ching - 8-24 Taipei TW
- Hsien, Chih-Ching - Taichune TW
- Hsien; Chih-Ching - Fen Yuan Taichung TW
- Hsien, Chih-Ching - Hong-Wen City TW
Patent Activity
| Patent | Date |
|---|---|
| Quick Release Device For Releasing Screw Bit From Socket App 20090165606 - Hsien; Chih-Ching | 2009-07-02 |
| Ratchet wrench handle Grant D592,024 - Hsien May 12, 2 | 2009-05-12 |
| Ratchet wrench handle Grant D566,496 - Hsien April 15, 2 | 2008-04-15 |
| Adjustable spanner Grant 7,240,591 - Hsien July 10, 2 | 2007-07-10 |
| Sleeve Grant D539,131 - Hsien March 27, 2 | 2007-03-27 |
| Pipe wrench having a fixed positioning ring Grant 7,185,564 - Hsien March 6, 2 | 2007-03-06 |
| Extendable handles for hand tools Grant 7,178,431 - Hsien February 20, 2 | 2007-02-20 |
| Power-saving scissors App 20060277764 - Hsien; Chih-Ching | 2006-12-14 |
| Spanner with teeth section at clamp portion App 20060272456 - Hsien; Chih-Ching | 2006-12-07 |
| Quick release device for releasing screw bit from socket Grant 7,131,358 - Hsien November 7, 2 | 2006-11-07 |
| Pliers having pivotal handles App 20060230886 - Hsien; Chih-Ching | 2006-10-19 |
| Ratchet control structure of bidirectional ratchet spanner Grant 7,121,171 - Hsien October 17, 2 | 2006-10-17 |
| Dual function wrench Grant 7,117,770 - Hsien October 10, 2 | 2006-10-10 |
| Pipe wrench having a fixed positioning ring App 20060219061 - Hsien; Chih-Ching | 2006-10-05 |
| Slide stop device of a hexagonal spanner Grant 7,104,168 - Hsien September 12, 2 | 2006-09-12 |
| Wrench with jaws having different tilt angles Grant 7,066,057 - Hsien June 27, 2 | 2006-06-27 |
| Hand tool with strain gauges Grant 7,062,978 - Hsien June 20, 2 | 2006-06-20 |
| Quick release device for releasing screw bit from socket App 20060123957 - Hsien; Chih-Ching | 2006-06-15 |
| Slide stop device of a hexagonal spanner Grant 7,059,222 - Hsien June 13, 2 | 2006-06-13 |
| Quick release device for releasing screw bit from socket App 20060107802 - Hsien; Chih-Ching | 2006-05-25 |
| Quick release device for releasing screw bit from socket App 20060107801 - Hsien; Chih-Ching | 2006-05-25 |
| Tool handle Grant D520,846 - Hsien May 16, 2 | 2006-05-16 |
| Spanner Grant D520,824 - Hsien May 16, 2 | 2006-05-16 |
| Lamp seat of a hand tool Grant 7,044,621 - Hsien May 16, 2 | 2006-05-16 |
| Slide stop device of a hexagonal spanner Grant 7,044,034 - Hsien May 16, 2 | 2006-05-16 |
| Wrench handle Grant D520,310 - Hsien May 9, 2 | 2006-05-09 |
| Slide stop device of a hexagonal spanner Grant 7,040,202 - Hsien May 9, 2 | 2006-05-09 |
| Torque wrench handle Grant D520,309 - Hsien May 9, 2 | 2006-05-09 |
| Wrench handle Grant D519,341 - Hsien April 25, 2 | 2006-04-25 |
| Two close ended spanner Grant D518,342 - Hsien April 4, 2 | 2006-04-04 |
| Two open ended spanner Grant D517,879 - Hsien March 28, 2 | 2006-03-28 |
| Handle of a hand tool Grant 7,017,455 - Hsien March 28, 2 | 2006-03-28 |
| Wrench with display device Grant 7,013,763 - Hsien March 21, 2 | 2006-03-21 |
| Wrench handle Grant D516,396 - Hsien March 7, 2 | 2006-03-07 |
| Wrench handle Grant D516,395 - Hsien March 7, 2 | 2006-03-07 |
| Socket Grant 7,000,505 - Hsien February 21, 2 | 2006-02-21 |
| Extendable handles for hand tools App 20060027053 - Hsien; Chih-Ching | 2006-02-09 |
| Quick release device for releasing screw bit from socket App 20060027057 - Hsien; Chih-Ching | 2006-02-09 |
| Electronic torque wrench App 20060027058 - Hsien; Chih-Ching | 2006-02-09 |
| Ratchet control structure of bidirectional ratchet spanner App 20060027050 - Hsien; Chih-Ching | 2006-02-09 |
| Pliers having pivotal handles App 20060027056 - Hsien; Chih-Ching | 2006-02-09 |
| Wrench with two jaws sharing a common inclined plane App 20060027051 - Hsien; Chih-Ching | 2006-02-09 |
| Extendable handle device App 20060027059 - Hsien; Chih-Ching | 2006-02-09 |
| Jaw portion structure of adjustable spanner App 20060021476 - Hsien; Chih-Ching | 2006-02-02 |
| Dual function wrench App 20060021478 - Hsien; Chih-Ching | 2006-02-02 |
| Wrench having greater torque App 20060016295 - Hsien; Chih-Ching | 2006-01-26 |
| Ratchet wrench having a sealing structure Grant 6,981,435 - Hsien January 3, 2 | 2006-01-03 |
| Ratchet wheel mounting structure for wrench Grant 6,981,433 - Hsien January 3, 2 | 2006-01-03 |
| Slide stop device of a hexagonal spanner App 20050274238 - Hsien, Chih-Ching | 2005-12-15 |
| Slide stop device of a hexagonal spanner App 20050274239 - Hsien, Chih-Ching | 2005-12-15 |
| Slide stop device of a hexagonal spanner App 20050268755 - Hsien, Chih-Ching | 2005-12-08 |
| Slide stop device of a hexagonal spanner App 20050268756 - Hsien, Chih-Ching | 2005-12-08 |
| Reinforcement teeth for ratchet tools App 20050262970 - Hsien, Chih-Ching | 2005-12-01 |
| Unidirectional buckling assembly of spanner App 20050257648 - Hsien, Chih-Ching | 2005-11-24 |
| Lamp seat of a hand tool App 20050259429 - Hsien, Chih-Ching | 2005-11-24 |
| Polygonal member engaging device Grant 6,962,100 - Hsien November 8, 2 | 2005-11-08 |
| Orientation adjustable spanner App 20050241444 - Hsien, Chih-Ching | 2005-11-03 |
| Hand tool having a retractable handle structure Grant 6,959,629 - Hsien November 1, 2 | 2005-11-01 |
| Method for manufacturing a twisted handle and device for twisting the handle App 20050217103 - Hsien, Chih-Ching | 2005-10-06 |
| Lamp assembly attached on a hand tool Grant 6,951,409 - Hsien October 4, 2 | 2005-10-04 |
| Ratchet socket tool Grant 6,951,154 - Hsien October 4, 2 | 2005-10-04 |
| Box end wrench Grant 6,948,407 - Hsien September 27, 2 | 2005-09-27 |
| Handle of a hand tool App 20050199107 - Hsien, Chih-Ching | 2005-09-15 |
| Dual function wrench App 20050199109 - Hsien, Chih-Ching | 2005-09-15 |
| Box End Wrench App 20050199104 - Hsien, Chih-Ching | 2005-09-15 |
| Hand tool having bendable holding portion Grant 6,941,845 - Hsien September 13, 2 | 2005-09-13 |
| Pliers Grant 6,941,846 - Hsien September 13, 2 | 2005-09-13 |
| Engaging recess for sockets Grant 6,938,524 - Hsien September 6, 2 | 2005-09-06 |
| Adjustable spanner having a torque detection function Grant 6,931,969 - Hsien August 23, 2 | 2005-08-23 |
| Wrench with display device App 20050178248 - Hsien, Chih-Ching | 2005-08-18 |
| Hand tool having a quick driving effect Grant 6,928,904 - Hsien August 16, 2 | 2005-08-16 |
| Reinforcement structure for adjustable wrenches Grant 6,928,905 - Hsien August 16, 2 | 2005-08-16 |
| Magnetic socket Grant 6,925,914 - Hsien August 9, 2 | 2005-08-09 |
| Wrench Grant D507,946 - Hsien August 2, 2 | 2005-08-02 |
| Bent wrench having torque measurement function Grant 6,920,811 - Hsien July 26, 2 | 2005-07-26 |
| Hand tool having a bendable holding portion Grant 6,918,324 - Hsien July 19, 2 | 2005-07-19 |
| Movable spanner Grant D507,163 - Hsien July 12, 2 | 2005-07-12 |
| Socket Grant D506,908 - Hsien July 5, 2 | 2005-07-05 |
| Pawl control structure ratchet tools Grant 6,912,935 - Hsien July 5, 2 | 2005-07-05 |
| Wrench type spanner Grant D506,371 - Hsien June 21, 2 | 2005-06-21 |
| Wrench Grant D506,373 - Hsien June 21, 2 | 2005-06-21 |
| Spanner Grant D506,372 - Hsien June 21, 2 | 2005-06-21 |
| Ratchet socket tool App 20050120835 - Hsien, Chih-Ching | 2005-06-09 |
| Hand Tool Having Bendable Holding Portion App 20050120837 - Hsien, Chih-Ching | 2005-06-09 |
| Wrench open end having a pushing tongue Grant 6,899,000 - Hsien May 31, 2 | 2005-05-31 |
| Engaging recess for sockets App 20050109166 - Hsien, Chih-Ching | 2005-05-26 |
| Wrench Open End Having A Pushing Tongue App 20050109169 - Hsien, Chih-Ching | 2005-05-26 |
| Control mechanism for controlling head of a box end wrench Grant 6,895,839 - Hsien May 24, 2 | 2005-05-24 |
| Wrench structure having a strengthened handle Grant 6,895,837 - Hsien May 24, 2 | 2005-05-24 |
| Polygonal member engaging device App 20050092139 - Hsien, Chih-Ching | 2005-05-05 |
| Polygonal member engaging device App 20050092138 - Hsien, Chih-Ching | 2005-05-05 |
| Pawl control mechanism for a ratchet tool Grant 6,886,428 - Hsien May 3, 2 | 2005-05-03 |
| Wrench having rotation adjustment effect Grant 6,883,404 - Hsien April 26, 2 | 2005-04-26 |
| Adjustable spanner App 20050081686 - Hsien, Chih-Ching | 2005-04-21 |
| Golf club having stabilized air flow structure Grant 6,881,157 - Hsien April 19, 2 | 2005-04-19 |
| Wrench having greater torque App 20050076746 - Hsien, Chih-Ching | 2005-04-14 |
| Adjustable spanner having a torque detection function App 20050076753 - Hsien, Chih-Ching | 2005-04-14 |
| Adjustable spanner App 20050076747 - Hsien, Chih-Ching | 2005-04-14 |
| Telescopic socket assembly Grant 6,877,403 - Hsien April 12, 2 | 2005-04-12 |
| One-way ratchet wrench Grant 6,874,391 - Hsien April 5, 2 | 2005-04-05 |
| Socket App 20050061116 - Hsien, Chih-Ching | 2005-03-24 |
| Lamp assembly attached on a hand tool App 20050047124 - Hsien, Chih-Ching | 2005-03-03 |
| Hand tool having a quick driving effect App 20050044994 - Hsien, Chih-Ching | 2005-03-03 |
| Box end of wrench Grant 6,860,176 - Hsien March 1, 2 | 2005-03-01 |
| Hand Tool Having A Retractable Handle Structure App 20050034573 - Hsien, Chih - Ching | 2005-02-17 |
| Hand tool having a larger operation zone App 20050034570 - Hsien, Chih - Ching | 2005-02-17 |
| Flashlight having a power indication function App 20050036306 - Hsien, Chih-Ching | 2005-02-17 |
| Hand tool having an extendable handle structure App 20050034574 - Hsien, Chih - Ching | 2005-02-17 |
| Hand tool having an adjustable handle App 20050034572 - Hsien, Chih-Ching | 2005-02-17 |
| Hand tool having an adjustable holding portion App 20050028653 - Hsien, Chih-Ching | 2005-02-10 |
| Hand tool having a bendable holding portion App 20050028652 - Hsien, Chih-Ching | 2005-02-10 |
| Bent wrench having torque measurement function App 20050028656 - Hsien, Chih-Ching | 2005-02-10 |
| Screwdriver having larger driving force App 20050028654 - Hsien, Chih-Ching | 2005-02-10 |
| Screwdriver assembly Grant 6,851,340 - Hsien February 8, 2 | 2005-02-08 |
| Detachable lamp for hand tool Grant 6,851,824 - Hsien February 8, 2 | 2005-02-08 |
| Multipurpose socket wrench Grant 6,851,334 - Hsien February 8, 2 | 2005-02-08 |
| Screw member App 20050022636 - Hsien, Chih-Ching | 2005-02-03 |
| Telescopic socket assembly App 20050022632 - Hsien, Chih-Ching | 2005-02-03 |
| Ratchet tool with magnetic engaging member Grant 6,845,691 - Hsien January 25, 2 | 2005-01-25 |
| Wrench having rotation adjustment effect App 20050011317 - Hsien, Chih-Ching | 2005-01-20 |
| Wrench having identification function App 20050011320 - Hsien, Chih-Ching | 2005-01-20 |
| Magnetic socket App 20050014596 - Hsien, Chih-Ching | 2005-01-20 |
| Pliers assembly App 20050011321 - Hsien, Chih-Ching | 2005-01-20 |
| Wrench structure having a strengthened handle App 20050011316 - Hsien, Chih-Ching | 2005-01-20 |
| Tool box tray structure App 20050011788 - Hsien, Chih-Ching | 2005-01-20 |
| Twisted handle for hand tools App 20050000328 - Hsien, Chih-Ching | 2005-01-06 |
| One-way Patchet Wrench App 20050000325 - Hsien, Chih-Ching | 2005-01-06 |
| Tool box having positioning effect App 20050000836 - Hsien, Chih-Ching | 2005-01-06 |
| Electronic torsional tool App 20040261542 - Hsien, Chih-Ching | 2004-12-30 |
| Electronic torsional tool App 20040261588 - Hsien, Chih-Ching | 2004-12-30 |
| Method for forming receiving hole in adjustable spanner Grant 6,834,566 - Hsien December 28, 2 | 2004-12-28 |
| Handle structure for hand tool App 20040250663 - Hsien, Chih-Ching | 2004-12-16 |
| Wrench Grant D499,619 - Hsien December 14, 2 | 2004-12-14 |
| Ratchet tool having operation levers on two sides of the tool App 20040244544 - Hsien, Chih-Ching | 2004-12-09 |
| Wrench structure having a driving mechanism App 20040226411 - Hsien, Chih-Ching | 2004-11-18 |
| Ratchet wrench having a sealing structure App 20040221687 - Hsien, Chih-Ching | 2004-11-11 |
| Pliers App 20040221695 - Hsien, Chih-Ching | 2004-11-11 |
| Wrench device with a socket assembly App 20040216567 - Hsien, Chih-Ching | 2004-11-04 |
| Wrench tool having magnet connected thereto Grant 6,810,774 - Hsien November 2, 2 | 2004-11-02 |
| Golf tee structure with adjustable height Grant 6,811,499 - Hsien November 2, 2 | 2004-11-02 |
| Wrench having a holding structure App 20040206213 - Hsien, Chih-Ching | 2004-10-21 |
| Pawl selection mechanism for ratchet tools Grant 6,805,027 - Hsien October 19, 2 | 2004-10-19 |
| Golf Tee Structure With Adjustable Height App 20040204268 - Hsien, Chih-Ching | 2004-10-14 |
| Flashlight with convex lens assembly providing multiple focuses Grant 6,802,622 - Hsien October 12, 2 | 2004-10-12 |
| Screwdriver assembly App 20040187649 - Hsien, Chih-Ching | 2004-09-30 |
| Manufacturing procedure of hand tool App 20040188268 - Hsien, Chih-Ching | 2004-09-30 |
| Wrench Grant D496,238 - Hsien September 21, 2 | 2004-09-21 |
| Tension meter and wrench arrangement Grant 6,784,799 - Hsien August 31, 2 | 2004-08-31 |
| Angle adjustable hand tools App 20040163503 - Hsien, Chih-Ching | 2004-08-26 |
| Screwdriver with multiple tip planes App 20040159195 - Hsien, Chih-Ching | 2004-08-19 |
| Torque test device Grant 6,772,645 - Hsien August 10, 2 | 2004-08-10 |
| Wrench having torque indicator Grant 6,766,700 - Hsien July 27, 2 | 2004-07-27 |
| Engaging ring with a larger area of outer tooth of ratchet tools App 20040139824 - Hsien, Chih-Ching | 2004-07-22 |
| Engagement structure of C-shaped clamp and engaging ring of head ratchet tools App 20040139825 - Hsien, Chih-Ching | 2004-07-22 |
| Engagement structure of C-shaped clamp and engaging ring of head ratchet tools App 20040139826 - Hsien, Chih-Ching | 2004-07-22 |
| Metal piece attraction device on ratchet tool Grant 6,761,092 - Hsien July 13, 2 | 2004-07-13 |
| Sealing device for flashlights Grant 6,761,464 - Hsien July 13, 2 | 2004-07-13 |
| Compact structure for controlling movement of pawl for ratchet tools Grant 6,761,091 - Hsien July 13, 2 | 2004-07-13 |
| Method for making a gear with 90-180 teeth App 20040123461 - Hsien, Chih-Ching | 2004-07-01 |
| Ratchet wheel mounting structure for wrench App 20040123701 - Hsien, Chih-Ching | 2004-07-01 |
| Handle for hand tools App 20040123703 - Hsien, Chih-Ching | 2004-07-01 |
| Golf club having stabilized air flow structure App 20040121851 - Hsien, Chih-Ching | 2004-06-24 |
| Method for making a magnetic handle for hand tools App 20040099096 - Hsien, Chih-Ching | 2004-05-27 |
| Wrench capable of optionally avoiding detachment of a bolt head member and allowing detachment of the bolt head member App 20040099101 - Hsien, Chih-Ching | 2004-05-27 |
| Flashlight with multiple focuses App 20040095757 - Hsien, Chih-Ching | 2004-05-20 |
| Sealing Device For Flashlights App 20040095753 - Hsien, Chih-Ching | 2004-05-20 |
| Flashlight having two sets of bulbs App 20040095755 - Hsien, Chih-Ching | 2004-05-20 |
| Device for holding a hand tool or flashlight App 20040094686 - Hsien, Chih-Ching | 2004-05-20 |
| Flashlight with length adjustable body App 20040095758 - Hsien, Chih-Ching | 2004-05-20 |
| Wrench tool having magnet connected thereto App 20040093998 - Hsien, Chih-Ching | 2004-05-20 |
| Torque test device App 20040093959 - Hsien, Chih-Ching | 2004-05-20 |
| Wrench with rollers movably engaged with wedge-shaped gaps between head and engaging ring App 20040093993 - Hsien, Chih-Ching | 2004-05-20 |
| Handle assembly for hand tools App 20040089115 - Hsien, Chih-Ching | 2004-05-13 |
| Tool handle having magnetic pieces received therein App 20040088824 - Hsien, Chih-Ching | 2004-05-13 |
| Method for making a tool with H-shaped cross section App 20040089104 - Hsien, Chih-Ching | 2004-05-13 |
| Multi-function flashlight App 20040090775 - Hsien, Chih-Ching | 2004-05-13 |
| Ratchet tool having operation levers on two sides of the tool App 20040089111 - Hsien, Chih-Ching | 2004-05-13 |
| Metal Piece Attraction Device On Ratchet Tool App 20040089110 - Hsien, Chih-Ching | 2004-05-13 |
| Wrench Grant D488,967 - Hsien April 27, 2 | 2004-04-27 |
| Wrench with angled function end Grant 6,715,383 - Hsien April 6, 2 | 2004-04-06 |
| Control assembly for a ratchet tool Grant 6,715,382 - Hsien April 6, 2 | 2004-04-06 |
| Hand tool having pivotable function end App 20040060398 - Hsien, Chih-Ching | 2004-04-01 |
| Ratchet wrench and lighting circuit Grant 6,712,484 - Hsien March 30, 2 | 2004-03-30 |
| Wrench Grant D487,681 - Hsien March 23, 2 | 2004-03-23 |
| Wrench Grant D487,682 - Hsien March 23, 2 | 2004-03-23 |
| Switch member for a ratchet tool App 20040045415 - Hsien, Chih-Ching | 2004-03-11 |
| Wrench having torque indicator App 20040040388 - Hsien, Chih-Ching | 2004-03-04 |
| Ratchet wrench having a rotatable ring to operate engaging member App 20040035256 - Hsien, Chih-Ching | 2004-02-26 |
| Handle of a wrench App 20040035263 - Hsien, Chih-Ching | 2004-02-26 |
| Reinforcement for movable jaw of an adjustable wrench App 20040035262 - Hsien, Chih-Ching | 2004-02-26 |
| Retractable/folding collapsible wrench Grant 6,691,595 - Hsien February 17, 2 | 2004-02-17 |
| Ratchet pipe wrench App 20040025642 - Hsien, Chih-Ching | 2004-02-12 |
| Tension meter and wrench arrangement App 20040027250 - Hsien, Chih-Ching | 2004-02-12 |
| Bi-directional Ratchet Wrench App 20040025644 - Hsien, Chih-Ching | 2004-02-12 |
| Ratchet wheel mounting structure for wrench App 20040025643 - Hsien, Chih-Ching | 2004-02-12 |
| Multiple function adjustable wrench App 20040025646 - Hsien, Chih-Ching | 2004-02-12 |
| Bi-directional ratchet wrench Grant 6,688,195 - Hsien February 10, 2 | 2004-02-10 |
| Pipe wrench having a fixed positioning ring App 20040016320 - Hsien, Chih-Ching | 2004-01-29 |
| Pipe wrench App 20040016321 - Hsien, Chih-Ching | 2004-01-29 |
| Hand tool having a vibration device Grant 6,681,663 - Hsien January 27, 2 | 2004-01-27 |
| Handle for hand tool Grant 6,681,664 - Hsien January 27, 2 | 2004-01-27 |
| Pawl control structure ratchet tool App 20040011165 - Hsien, Chih-Ching | 2004-01-22 |
| Ratchet mechanism for ratchet tools App 20040011162 - Hsien, Chih-Ching | 2004-01-22 |
| Compact structure for controlling movement of pawl for ratchet tools App 20040011163 - Hsien, Chih-Ching | 2004-01-22 |
| Pawl selection mechanism for ratchet tools App 20040011164 - Hsien, Chih-Ching | 2004-01-22 |
| Handle For Hand Tool App 20040007103 - Hsien, Chih-Ching | 2004-01-15 |
| Angle adjustable golf club Grant 6,676,533 - Hsien January 13, 2 | 2004-01-13 |
| Inner periphery of a driving member for driving nut with different specifications Grant 6,668,686 - Hsien December 30, 2 | 2003-12-30 |
| Wrench teeth arrangement for ratchet tools Grant 6,666,111 - Hsien December 23, 2 | 2003-12-23 |
| Inner Periphery Of A Driving Member For Driving Nut With Different Specifications App 20030230174 - Hsien, Chih-Ching | 2003-12-18 |
| Reading device for a tool App 20030226408 - Hsien, Chih-Ching | 2003-12-11 |
| Identification system for a tool App 20030221954 - Hsien, Chih-Ching | 2003-12-04 |
| Reinforcement teeth structure for ratchet Grant 6,655,238 - Hsien December 2, 2 | 2003-12-02 |
| Ratchet wheel mounting arrangement for ratchet wrenchet Grant 6,651,533 - Hsien November 25, 2 | 2003-11-25 |
| Handle structure for hand tools App 20030188608 - Hsien, Chih-Ching | 2003-10-09 |
| Orientation adjustable spanner App 20030188607 - Hsien, Chih-Ching | 2003-10-09 |
| Switching lever for ratchet tools Grant 6,609,444 - Hsien August 26, 2 | 2003-08-26 |
| Retractable/folding collapsible wrench App 20030066392 - Hsien, Chih-Ching | 2003-04-10 |
| Multipurpose socket wrench App 20030056624 - Hsien, Chih-Ching | 2003-03-27 |
| Detachable lamp for hand tool App 20030058637 - Hsien, Chih-Ching | 2003-03-27 |
| Ratchet wrench App 20030041697 - Hsien, Chih-Ching | 2003-03-06 |
| Ratchet wrench and lighting circuit App 20030043574 - Hsien, Chih-Ching | 2003-03-06 |
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