Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4325534 | Manually operated blowout preventer and hydraulic operator therefor | Steven R. Hayter | 1982-04-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4325534 | Manually operated blowout preventer and hydraulic operator therefor | Steven R. Hayter | 1982-04-20 |