Assignee
QIU YONGZHONG
CN·1 granted patent·1 pending application·0 citations·filing 2011–2020
Top patents by PatentIndex Score
2 records- 0135US11692392B2Roller blind balance regulator and roller blind composed thereofQIU YONGZHONG·Filed 2020·Granted Jul 4, 2023·0 cites·10 claims
- 0224US2013126288A1Bead-chain driving cluch for super-heavy-duty roller blind with self-locking coil srping system driven prior to planetary gear deceleratorQIU YONGZHONG·Filed 2011·Application pending·0 cites
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