Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855723 | Audio-visual alarm system with address display | Marlene Fritz, Betty J. Love, Chuck Davis | 1989-08-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855723 | Audio-visual alarm system with address display | Marlene Fritz, Betty J. Love, Chuck Davis | 1989-08-08 |