Sun B. Cha

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Centreville, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Power driven wrench
- Patent number 6,739,221
- Issue date May 25, 2004
- Sun B. Cha
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
POWER DRIVEN WRENCH
- Publication number 20040069096
- Publication date Apr 15, 2004
- Sun B. Cha
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS