Assignee
DU YONGZHEN
CN·3 granted patents·8 citations·filing 2019–2022
Technology mixF15D1
Top patents by PatentIndex Score
3 records- 0176US11578738B1Vortex water flow acceleratorDU YONGZHEN·Filed 2022·Granted Feb 14, 2023·1 cites·4 claims
- 0252USD971380SVortex water flow acceleratorDU YONGZHEN·Filed 2022·Granted Nov 29, 2022·2 cites·1 claims
- 0345USD941192SThree-wheeled baby cartDU YONGZHEN·Filed 2019·Granted Jan 18, 2022·5 cites·1 claims
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