Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090480 | Underreamer with simultaneously expandable cutter blades and method | Jimmy Fultz | 1992-02-25 |
| 5060738 | Three-blade underreamer | Jimmy Fultz | 1991-10-29 |
| 5036921 | Underreamer with sequentially expandable cutter blades | Jimmy Fultz | 1991-08-06 |