Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5103966 | Centrifugal force material transfer apparatus | — | 1992-04-14 |
| 4601607 | Mine shaft guide system | — | 1986-07-22 |
| 4353676 | Bunker for tunnel boring | Henry V. Mikulich | 1982-10-12 |