RB

Roger L. Berkbigler

RF Ramsey Foundation: 1 patents #4 of 8Top 50%
📍 Ballwin, MO: #362 of 595 inventorsTop 65%
🗺 Missouri: #13,067 of 23,789 inventorsTop 55%
Overall (All Time): #4,103,912 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4182579 Retaining ring Harold E. McCormick 1980-01-08