Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4665946 | Rotary control valves with pressure-reducing means | — | 1987-05-19 |
| 4453699 | Gate and swing valve | Burton T. Mast | 1984-06-12 |
| 4212321 | Low noise rotary control valve | — | 1980-07-15 |