Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821773 | Directional control valve | Helmut Motzer | 1989-04-18 |
| 4237930 | Safety valve | Erich Ruchser | 1980-12-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821773 | Directional control valve | Helmut Motzer | 1989-04-18 |
| 4237930 | Safety valve | Erich Ruchser | 1980-12-09 |