Chin-lung Yang

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Sanchung City, Taipei Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Multiple-shaft pen kit
- Patent number 5,927,881
- Issue date Jul 27, 1999
- Chin-Chen Yang
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Rods precision cutting-off and end surface grinding machine
- Patent number 4,928,432
- Issue date May 29, 1990
- Chin-lung Yang
- B28 - WORKING CEMENT, CLAY, OR STONE