Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4313919 | Process for removing fine solids from phosphoric acid by vacuum filtration | Thomas E. Richards, Michael A. Daigle | 1982-02-02 |
| 4303524 | Rotary vacuum precoat filter | Thomas E. Richards, Michael A. Daigle | 1981-12-01 |