Zaifu Yang

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Ningbo, CN

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Patents Grantslast 30 patents

Information Patent Grant
Door locking system with an idle handle
- Patent number 8,479,543
- Issue date Jul 9, 2013
- Zaifu Yang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Door Locking System With An Idle Handle
- Publication number 20120291503
- Publication date Nov 22, 2012
- NINGBO YONGFA GROUP CO., LTD.,
- Zaifu Yang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES