Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4699547 | Mine truss structures and method | — | 1987-10-13 |
| 4666344 | Truss systems and components thereof | — | 1987-05-19 |
| 4666345 | Rock bolt structure | — | 1987-05-19 |
| 4661022 | Rock bolt structure and installation | — | 1987-04-28 |
| 4650373 | Rock bolt construction and installation | — | 1987-03-17 |