Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685669 | Mining roof support | Tadeusz Lewinski, Leszek Jarno, Antoni Trojan, Marian Bednarz, Mieczysaw Godkowicz +4 more | 1997-11-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685669 | Mining roof support | Tadeusz Lewinski, Leszek Jarno, Antoni Trojan, Marian Bednarz, Mieczysaw Godkowicz +4 more | 1997-11-11 |