Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4529046 | Device for producing boreholes in coal or the like | Helmut Becker | 1985-07-16 |
| 4440242 | Device for producing boreholes in coal or the like | Helmut Becker | 1984-04-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4529046 | Device for producing boreholes in coal or the like | Helmut Becker | 1985-07-16 |
| 4440242 | Device for producing boreholes in coal or the like | Helmut Becker | 1984-04-03 |