Huei-Yu Chang

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Shijr City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Foldable workbench
- Patent number 6,769,674
- Issue date Aug 3, 2004
- Huei-Yu Chang
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
Foldable workbench
- Publication number 20030214088
- Publication date Nov 20, 2003
- Huei-Yu Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS