Martin Wurtenberger

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Patents Grantslast 30 patents

Information Patent Grant
Method of coloring cut gemstones
- Patent number 7,033,640
- Issue date Apr 25, 2006
- D. Swarovski & Co.
- Thomas Rauch
- B44 - DECORATIVE ARTS

Patents Applicationslast 30 patents

Information Patent Application
Method of coloring cut gemstones
- Publication number 20030124299
- Publication date Jul 3, 2003
- Thomas Rauch
- B44 - DECORATIVE ARTS