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Patent applications and USPTO patent grants for Fang; Yen Shan.The latest application filed is for "torque system of power tool".
Patent | Date |
---|---|
Torque system of power tool Grant 8,307,911 - Chu , et al. November 13, 2 | 2012-11-13 |
Torque system of power tool App 20110180288 - Chu; Chiou Long ;   et al. | 2011-07-28 |
Locking system for a spindle of a power tool Grant 7,455,574 - Chu , et al. November 25, 2 | 2008-11-25 |
Locking system for a spindle of a power tool App 20080087519 - Chu; C. L. ;   et al. | 2008-04-17 |
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