Wei Zhao

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Cincinnati, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Engraver and method for focusing and measuring areas on a workpiece...
- Patent number 6,614,558
- Issue date Sep 2, 2003
- MDC Max Daetwyler AG
- Michael Duane Christopher
- B44 - DECORATIVE ARTS
Information Patent Grant
System and method for focusing, imaging and measuring areas on a wo...
- Patent number 5,737,090
- Issue date Apr 7, 1998
- Ohio Electronic Engravers, Inc.
- Michael Duane Christopher
- B44 - DECORATIVE ARTS