JK

John L. Kretzschnar

📍 Tulsa, OK: #1,272 of 2,344 inventorsTop 55%
🗺 Oklahoma: #6,781 of 12,736 inventorsTop 55%
Overall (All Time): #4,098,229 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4293815 Fluxgate magnetometer circuit with earth's field elimination Jerry B. West, Bing-Fai Fung 1981-10-06