Liao; Youn Chyuan
Patent Applications and Registrations
Patent applications and USPTO patent grants for Liao; Youn Chyuan.The latest application filed is for "ratchet tool having increased driving torque".
- Liao; Youn Chyuan - Situn Taichung 40741 TW
- Liao; Youn Chyuan - Taichung TW
- Liao; Youn Chyuan - Taichung 40741 TW
| Patent | Date |
|---|---|
| Ratchet tool having increased driving torque Grant 7,311,186 - Liao December 25, 2 | 2007-12-25 |
| Tool device having rotatable driving shank Grant 7,287,450 - Liao October 30, 2 | 2007-10-30 |
| Ratchet tool having increased driving torque App 20070039795 - Liao; Youn Chyuan | 2007-02-22 |
| Tool handle having tool receiving structure Grant 7,174,814 - Liao February 13, 2 | 2007-02-13 |
| Tool having detachable handle members Grant 7,039,975 - Liao May 9, 2 | 2006-05-09 |
| Tool handle having tool receiving structure App 20050284267 - Liao, Youn Chyuan | 2005-12-29 |
| Rotatable Tool Handle Having A Solid Locking Structure App 20030015071 - Liao, Youn Chyuan | 2003-01-23 |
| Tool box Grant D446,651 - Liao August 21, 2 | 2001-08-21 |
| Screwdriver Grant 6,089,133 - Liao July 18, 2 | 2000-07-18 |
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