Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361075 | Unlockable check valve, particularly for use as recovery and setting valve in underground mining | — | 1982-11-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361075 | Unlockable check valve, particularly for use as recovery and setting valve in underground mining | — | 1982-11-30 |