Chen Ming-Chieh

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Lu-Kang Town, Chang-Hua Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Helical torsion spring with an attached clip
- Patent number 5,666,702
- Issue date Sep 16, 1997
- Chen Ming-Chieh
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER