C. Paul Christensen

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Fairhaven, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for laser marking a gemstone
- Patent number 6,713,715
- Issue date Mar 30, 2004
- Potomac Photonics, Inc.
- C. Paul Christensen
- B44 - DECORATIVE ARTS

Patents Applicationslast 30 patents

Information Patent Application
Method and system for laser marking a gemstone
- Publication number 20040089642
- Publication date May 13, 2004
- C. Paul Christensen
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Laser system and method for marking gemstones
- Publication number 20030038121
- Publication date Feb 27, 2003
- C. Paul Christensen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method and system for laser marking a gemstone
- Publication number 20020117486
- Publication date Aug 29, 2002
- C. Paul Christensen
- B44 - DECORATIVE ARTS