Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5366013 | Shock absorber for use in a wellbore including a frangible breakup element preventing shock absorption before shattering allowing shock absorption after shattering | A. Glen Edwards, Joe C. Hromas, Edward G. Smith, Jr. | 1994-11-22 |
| 5318126 | Explosively opened production valve including a frangible breakup element operated by tubing pressure or rathole pressure or both | A. Glen Edwards, Joe C. Hromas | 1994-06-07 |
| 5293940 | Automatic tubing release | Joe C. Hromas, Antoni Miszewski | 1994-03-15 |
| 5277262 | Hydraulic safety pin and method of operating a pressure-controlled device | A. Glen Edwards, Edward G. Smith, Jr. | 1994-01-11 |