Assignee
HU ZHENQIAN
7 granted patents·52 citations·filing 2006–2007
Top patents by PatentIndex Score
7 records- 0158US8141883B2Self-locking mechanism of manually tightened drill chuckHU ZHENQIAN·Filed 2006·Granted Mar 27, 2012·9 cites·9 claims
- 0256USD565376SDrill chuckHU ZHENQIAN·Filed 2007·Granted Apr 1, 2008·9 cites·1 claims
- 0355USD562099SDrill chuckHU ZHENQIAN·Filed 2007·Granted Feb 19, 2008·10 cites·1 claims
- 0455USD555181SDrill chuckHU ZHENQIAN·Filed 2007·Granted Nov 13, 2007·10 cites·1 claims
- 0554USD565377SDrill chuckHU ZHENQIAN·Filed 2007·Granted Apr 1, 2008·8 cites·1 claims
- 0642USD563188SDrill chuckHU ZHENQIAN·Filed 2007·Granted Mar 4, 2008·4 cites·1 claims
- 0733USD563187SDrill chuckHU ZHENQIAN·Filed 2007·Granted Mar 4, 2008·2 cites·1 claims
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