Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D353898 | Support for stabilizing walls in a mine shaft | David H. Starke | 1994-12-27 |
| 5295768 | Friction rock stabilizer | David H. Starke | 1994-03-22 |
| 4271653 | Cladding sheets | — | 1981-06-09 |