KD

Keith A. DiRienz

SI Smith International: 1 patents #390 of 708Top 60%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,001,570 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4610452 Belleville seal for sealed bearing rotary cone rock bits — 1986-09-09