Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4324407 | Pressure actuated metal-to-metal seal | Neil R. Upham | 1982-04-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4324407 | Pressure actuated metal-to-metal seal | Neil R. Upham | 1982-04-13 |