Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4505622 | Process and arrangement for the support of underground cavity systems by an efficient safety casing wall | Csaba Asszonyi, Istvan Klausz, Istvan Kmety, Nandor Meitzen | 1985-03-19 |
| 4245926 | Welded grid, primarily for securing underground cavities, cavity systems, as well as process for making the grid | Csaba Asszonyi, Istvan Klausz, Istvan Kmety, Nandor Meitzen | 1981-01-20 |