RF

Ralph W. Farkas

DR Drain-All: 1 patents #3 of 6Top 50%
KO Koehring: 1 patents #14 of 38Top 40%
📍 Wilmington, OH: #67 of 170 inventorsTop 40%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,339,208 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4779640 Automatic drain valve Ernie W. Cummings 1988-10-25
4384224 Drive unit for flexshaft vibrators Clem Spitler 1983-05-17