Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
WC

W. D. Campbell

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Los Angeles, CA: #7,008 of 12,377 inventorsTop 60%
California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #3,884,203 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5044278 Electrically ignitible cartridge system 1991-09-03