Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4784229 | Device, preferably for underground purposes, to transfer information out of a drilling hole | Heinz Wallussek | 1988-11-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4784229 | Device, preferably for underground purposes, to transfer information out of a drilling hole | Heinz Wallussek | 1988-11-15 |