Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5574436 | Smoke detector including an indicator for indicating a missing primary power source which is powered by a substantially nonremovable secondary power source | Gerald D. Rork | 1996-11-12 |
| 5568129 | Alarm device including a self-test reminder circuit | Gerald D. Rork | 1996-10-22 |
| 5103216 | Improperly inserted battery detector | — | 1992-04-07 |
| 5055830 | Battery sensing mechanism | Otto J. Cousins, Thomas E. Paulick, James H. Woodburn | 1991-10-08 |
| 4901056 | Test initiation apparatus with continuous or pulse input | Nicholas J. Bellavia, Daniel J. Birk, Fred Conforti | 1990-02-13 |
| 4827244 | Test initiation apparatus with continuous or pulse input | Nicholas J. Bellavia, Daniel J. Birk, Fred Conforti | 1989-05-02 |