Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5290445 | Filtering apparatus | — | 1994-03-01 |
| 5286381 | Filter assemblies | Charles N. Rothwell | 1994-02-15 |
| 5279731 | Depth filter media | Nigel J. D. Cook, Kenneth Roy Weight, Richard Gutman | 1994-01-18 |