Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5975538 | Radial lip shaft seal | Roger W. Krause, Scott C. Spencer | 1999-11-02 |
| 5957461 | Radial lip shaft seal | — | 1999-09-28 |
| 5039112 | Multi-layer lip seal assembly | Roger W. Krause | 1991-08-13 |