Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856940 | Lemniscate mining supports | Jerzy Cieslik, Marek Flak, Eugeniusz Kuczka, Franciszek Oles, Zdsizlaw Marszycki | 1989-08-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856940 | Lemniscate mining supports | Jerzy Cieslik, Marek Flak, Eugeniusz Kuczka, Franciszek Oles, Zdsizlaw Marszycki | 1989-08-15 |