Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5257665 | Method and system for recovering liquids and gas through a well | — | 1993-11-02 | |
| 4476924 | Grease injection control head having a specific gas trap | Carl E. Winders | 1984-10-16 | $902,000 |
| 4415028 | Apparatus for measuring bottom hole well conditions | — | 1983-11-15 | $876,000 |
| 4360064 | Circulating valve for wells | John A. O'Connor, Warren E. Holland, James D. Burley, Ronald D. Rogers, Ben D. Terral | 1982-11-23 | $13,049,000 |
| 4254829 | Well locking device | — | 1981-03-10 | $1,130,000 |