RD

Ronald D. Drake

OM Oil Sands Underground Mining: 1 patents #1 of 3Top 35%
📍 Lake Arrowhead, CA: #2 of 3 inventorsTop 70%
🗺 California: #8,996 of 28,521 inventorsTop 35%
Overall (2003): #131,671 of 273,478Top 50%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6554368 Method and system for mining hydrocarbon-containing materials Michael Kobler, John D. Watson 2003-04-29