EJ

Earl T. Koskie, Jr.

DS Diamant Boart Stratabit S.A.: 1 patents #6 of 20Top 30%
DI Dresser Industries: 1 patents #301 of 787Top 40%
📍 Casper, WY: #67 of 201 inventorsTop 35%
🗺 Wyoming: #524 of 1,797 inventorsTop 30%
Overall (All Time): #2,324,152 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4930587 Coring tool David E. Young, Andrew R. Easton 1990-06-05
4209890 Method of making a rotary rock bit with seal recess washer — 1980-07-01