Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6230805 | Methods of hydraulic fracturing | Claude Vercaemer, Terry Greene | 2001-05-15 |
DP
Douglas J. Pferdehirt
Overall (All Time): #3,581,707 of 4,157,543Top 90%
1
Patents All Time