Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4346009 | Centrifugal spin-on filter or separator | Willis R. Alexander | 1982-08-24 |
| 4284504 | Centrifugal spin-on filter or separator and method of making and assembling the same | Willis R. Alexander | 1981-08-18 |