Jason Chang

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Fengxian, CN

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic lock with auxiliary mechanical locking or resistance
- Patent number 8,757,685
- Issue date Jun 24, 2014
- Shanhai One Top Corporation
- Jason Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Magnetic Lock Means With Auxiliary Mechanical Locking or Resistance...
- Publication number 20090302619
- Publication date Dec 10, 2009
- Jason Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES