Issued Patents 1989
Showing 1–2 of 2 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 |
Showing 1–2 of 2 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 |