Kuo; Jun-Lian

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Patents Grantslast 30 patents

Information Patent Grant
Mechanical writing apparatus with a mechanism for retracting presha...
- Patent number 5,221,151
- Issue date Jun 22, 1993
- Kuo; Jun-Lian
- Jun-Liang Kuo
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES