DB

Donald A. Best

EX ExxonMobil: 2 patents #3,932 of 10,161Top 40%
📍 Calgary, CA: #1,801 of 5,407 inventorsTop 35%
Overall (All Time): #2,307,799 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5095990 Method and device for sand control Kevin C. Grondin 1992-03-17
4280559 Method for producing heavy crude — 1981-07-28