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

John A. Cannings

Overall (All Time): #4,098,492 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4294454 Rotary seal unit 1981-10-13