Ka Yin Yik

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Hong Kong, HK

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Patents Grantslast 30 patents

Information Patent Grant
Track zipper and connecting structure with a track zipper
- Patent number 10,349,708
- Issue date Jul 16, 2019
- Chi Yin Mak
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
TRACK ZIPPER AND CONNECTING STRUCTURE WITH A TRACK ZIPPER
- Publication number 20190246749
- Publication date Aug 15, 2019
- Chi Yin Mak
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES