JS

James H. Janzen, Sr.

📍 Tulsa, OK: #1,272 of 2,344 inventorsTop 55%
🗺 Oklahoma: #6,781 of 12,736 inventorsTop 55%
Overall (All Time): #4,020,774 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4538434 Security housing for oil storage tank valve James H. Janzen, Jr. 1985-09-03