Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4694988 | Control installation for variable volume air diffusers | Raymond H. Dean | 1987-09-22 |
| 4694989 | Control installation for variable volume air diffusers | Raymond H. Dean | 1987-09-22 |
| 4648552 | Control installation for variable volume air diffusers | Raymond H. Dean | 1987-03-10 |