Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4562853 | Downhole fire control | Wayne M. Sullivan | 1986-01-07 |
| 4386666 | In-hole motor drill with locking bit clutch | Gary M. Crase | 1983-06-07 |
| 4329127 | Sealed bearing means for in hole motors | Bela Geczy | 1982-05-11 |
| 4220380 | Bearing assembly | Gary M. Crase, Kurt H. Trezeciak | 1980-09-02 |
| 4213508 | Downhole fire control | Wayne M. Sullivan | 1980-07-22 |