Cheng-Hung YEN

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Taichung City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Fastener
- Patent number 11,261,901
- Issue date Mar 1, 2022
- Cheng-Hung Yen
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
ROTATING ELEMENT OPERATING DEVICE
- Publication number 20210031275
- Publication date Feb 4, 2021
- Cheng-Hung YEN
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
FASTENER
- Publication number 20190072125
- Publication date Mar 7, 2019
- Cheng-Hung YEN
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...