DF

David John Fisher

EI Electric Power Research Institute: 1 patents #6 of 81Top 8%
📍 San Fernando, CA: #22 of 125 inventorsTop 20%
🗺 California: #2,144 of 10,592 inventorsTop 25%
Overall (1989): #123,299 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4873056 Chemical test kit for detecting impurities in an oil sample — 1989-10-10