Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4556222 | Auxiliary sealing system for fluid mixers | Donald E. Lewis | 1985-12-03 |
| 4432677 | Cutter for cylindrical locks | — | 1984-02-21 |
| 4368801 | Column climbing device | — | 1983-01-18 |