Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5913641 | Tensionable cable truss support system | — | 1999-06-22 |
| 5238329 | Mine roof support system | Klaus M. Langeneckert, Gero Herrmann | 1993-08-24 |
| 5193940 | Mine roof support system | — | 1993-03-16 |