Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872517 | Rotatable fluid conductor for well apparatus | Billy MacCline | 1989-10-10 |
| 4800968 | Well apparatus with tubular elevator tilt and indexing apparatus and methods of their use | Billy M. Cline | 1989-01-31 |