Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4583731 | Spinal exercising apparatus | James P. Crivello | 1986-04-22 |
| RE31511 | Rotary cutterhead for an earth boring machine | — | 1984-01-31 |
| 4234235 | Rotary cutterhead for an earth boring machine | Richard J. Robbins | 1980-11-18 |
| 4193637 | Rotary cutterhead for an earth boring machine | — | 1980-03-18 |