Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498068 | Non-entry mining method equipment | Rudiger Putzer | 1996-03-12 |
| 5380127 | Non-entry method of underground excavation in weak or water bearing grounds | Clovis Caleix | 1995-01-10 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498068 | Non-entry mining method equipment | Rudiger Putzer | 1996-03-12 |
| 5380127 | Non-entry method of underground excavation in weak or water bearing grounds | Clovis Caleix | 1995-01-10 |