James F. Calvagna

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Anaheim, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Battery capacity and usage system
- Patent number 7,015,822
- Issue date Mar 21, 2006
- Duffield Marine, Inc.
- Arthur J. Heiser, Jr.
- G01 - MEASURING TESTING
Information Patent Grant
Method of code changing for electronic lock
- Patent number 4,646,080
- Issue date Feb 24, 1987
- Genest; Leonard J.
- Leonard J. Genest
- G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents

Information Patent Application
Battery capacity and usage system
- Publication number 20040027249
- Publication date Feb 12, 2004
- Arthur J. Heiser
- G01 - MEASURING TESTING