Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844701 | Mobile pump apparatus | Frank D. Makowski, Mark L. Campbell, Michael Austen | 1989-07-04 |
| 4815747 | Face type seal assembly | — | 1989-03-28 |
| 4342538 | Face-type shaft seal | George S. York | 1982-08-03 |