MC

Michael A. Calkins

BK Bkm: 2 patents #3 of 6Top 50%
📍 San Diego, CA: #11,944 of 23,606 inventorsTop 55%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,325,196 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
RE33270 Pressure-controlled fuel injection for internal combustion engines Niels J. Beck, William E. Weseloh, Robert L. Barkhimer 1990-07-24
4628881 Pressure-controlled fuel injection for internal combustion engines Niels J. Beck, William E. Weseloh, Robert L. Barkhimer 1986-12-16