Yao-Jen CHANG

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Taichung City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Feeding device
- Patent number 9,144,836
- Issue date Sep 29, 2015
- Hiwin Technologies Corp.
- Chien-Hsiang Tsai
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
FEEDING DEVICE
- Publication number 20130313302
- Publication date Nov 28, 2013
- Hiwin Technologies Corp.
- Chien-Hsiang TSAI
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...