Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4584485 | Optical block in smoke detectors | Robert B. Powers, Donald L. Adams | 1986-04-22 |
| 4517555 | Smoke detector with remote alarm indication | Walter F. Schuchard | 1985-05-14 |
| 4488049 | Moving wall test device in optical smoke detectors | — | 1984-12-11 |
| 4424553 | Multidirectional mount for electrical instruments | Robert B. Powers, Bruce Edwin Chapman | 1984-01-03 |
| 4232307 | Electrical test circuit for optical particle detector | — | 1980-11-04 |
| 4206366 | Optical smoke detector | Robert B. Powers, Hugh D. Dyer | 1980-06-03 |