JC

James F. Calvagna

DM Duffield Marine: 1 patents #2 of 3Top 70%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Anaheim, CA: #477 of 1,337 inventorsTop 40%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,166,619 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7015822 Battery capacity and usage system Arthur J. Heiser, Jr. 2006-03-21
4646080 Method of code changing for electronic lock Leonard J. Genest 1987-02-24