Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671769 | Swing check valve and method for repairing same | Walter Booth | 1997-09-30 |
| 5624559 | Bag filter and retainer therefor | Walter Booth | 1997-04-29 |
| 5609185 | Valve indicator and handle assembly | Walter Booth | 1997-03-11 |
| D377825 | Bag filter vessel | Walter Booth | 1997-02-04 |