Yen Hsing Enterprise Co., Ltd.

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Taichung Hsien, TW

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Information Patent Grant
Ratchet screwdriver
- Patent number 6,393,949
- Issue date May 28, 2002
- Yen Hsing Enterprise Co., Ltd.
- Shih-Chi Ho
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

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