Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5851580 | Shotcrete spraying process | Otto Tschumi, Markus Vogel | 1998-12-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5851580 | Shotcrete spraying process | Otto Tschumi, Markus Vogel | 1998-12-22 |