Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4304308 | Burner apparatus for making holes in coal seams | German Munding, Helmut Hopmann, Armin Sowa, Walter Terschuren | 1981-12-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4304308 | Burner apparatus for making holes in coal seams | German Munding, Helmut Hopmann, Armin Sowa, Walter Terschuren | 1981-12-08 |