Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5088336 | Pipeline caliper pig | Jeffrey S. Rosenberg | 1992-02-18 |
| 4953412 | Pipeline caliper pig | Jeffrey S. Rosenberg | 1990-09-04 |
| 4491778 | Motor variable frequency drive | Dick L. Knox, John M. Leuthen | 1985-01-01 |
| 4410845 | Backspin detection circuit for a submersible pump | — | 1983-10-18 |