Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873753 | Control system for a rotation station for remotely installing a mechanical tube plug | Samuel B. Crabtree | 1989-10-17 |
| 4804814 | Electron discharge machining tool | Tommy J. Southerland, Eugene L. Hinds, Timothy L. Brown | 1989-02-14 |