Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799738 | Mining method for working large-scale mineral deposits by the caving system | Andras Solymos, Laszlo Kis-Tamas, Istvan Forisek, Laszlo Dorombozi, Otto Lukonits | 1989-01-24 |
| 4400035 | Process for the extraction of thick coal seams | Hugo Salamon, Andras Solymos, Jozsef Takacs, Istvan Toth | 1983-08-23 |
| 4340254 | Method of mining heavy coal seams in two or more benches | Laszlo Dorombozi, Istvan Forisek, Gyula Kuburczik, Gyorgy Stuber | 1982-07-20 |