Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4617909 | Method of and device for preventing smoke curling from underneath the hood of a grease extraction ventilator | — | 1986-10-21 |
| 4540045 | Heat exchanger | — | 1985-09-10 |
| 4531572 | Method of and unit for recovery of waste energy | — | 1985-07-30 |
| 4529032 | Method of and apparatus for recovery of waste energy | — | 1985-07-16 |
| 4451960 | Method of producing multiple coil, multiple tube heat exchanger | — | 1984-06-05 |
| 4407266 | Method of and apparatus for exhaust control and supplying tempered makeup air for a grease extraction ventilator | — | 1983-10-04 |
| 4313491 | Coiled heat exchanger | — | 1982-02-02 |
| 4285390 | Method of and apparatus for supplying treated air to spaces having different cooling requirements | Dennis M. Fortune | 1981-08-25 |