Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5292353 | Air scrubber | Robert L. Anderson, Donald W. Alwood, James T. Otenbaker, Frederick F. Fritz | 1994-03-08 |
| 4987882 | Roof mounted kitchen hood grease exhaust blowers | — | 1991-01-29 |
| 4977884 | Fail-safe blower drive for roof mounted kitchen hood grease exhaust blowers | — | 1990-12-18 |
| 4832953 | Method for preventing the formation of a crystalline hydrate in a dispersion of a liquid in a monaqueous matrix | Patricia S. Campbell, David J. Enscore, Robert M. Gale | 1989-05-23 |
| 4586486 | Multilevel air distribution panel for air ventilation hood | — | 1986-05-06 |
| 4186727 | Air ventilation and washing system | Robert L. Anderson | 1980-02-05 |