Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4938869 | Spiral wound filter element | Richard E. Bayerlein, Douglas G. Bayerlein | 1990-07-03 |
| 4292179 | Spin-on filter coalescer unit with flow reversing baffle assembly | Walter H. Stone | 1981-09-29 |
| 4187136 | Method of making a graduated density liquid filter element | — | 1980-02-05 |