Tzu Chun Chih

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New Taipei City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Wireless blue-tooth earphone
- Patent number 11,146,881
- Issue date Oct 12, 2021
- Cheng Uei Precision Industry Co., Ltd.
- Tzu Chun Chih
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
WIRELESS BLUE-TOOTH EARPHONE
- Publication number 20210250673
- Publication date Aug 12, 2021
- Cheng Uei Precision Industry Co., LTD.
- Tzu Chun Chih
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER