Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4559066 | Filters for purification of gases | George S. Hunter, Brian Walker | 1985-12-17 |
| 4360433 | Filter elements for gas or liquid | Brian Walker | 1982-11-23 |
| 4303472 | Filter elements for gas or liquid and methods of making such filters | Brian Walker | 1981-12-01 |
| 4272318 | Apparatus for making filter elements for gas or liquid | Brian Walker | 1981-06-09 |