John J. Christensen

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Manteca, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
System for verification of unique items
- Patent number 5,673,338
- Issue date Sep 30, 1997
- Verification Technologies, Inc.
- Stuart Denenberg
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
System for registration, identification and verification of items u...
- Patent number 5,521,984
- Issue date May 28, 1996
- Verification Technologies, Inc.
- Stuart Denenberg
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical power splitter for splitting high power light
- Patent number 5,408,553
- Issue date Apr 18, 1995
- The United States of America as represented by the United States Department o...
- Ronald E. English
- G02 - OPTICS
Information Patent Grant
Electromechanical chaotic chiming mechanism
- Patent number 5,072,208
- Issue date Dec 10, 1991
- John J. Christensen
- G10 - MUSICAL INSTRUMENTS ACOUSTICS