Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D373965 | Audible signal for alarm units | — | 1996-09-24 |
| 5467323 | Electroacoustic transducer | — | 1995-11-14 |
| 5432758 | Electroacoustic transducer | — | 1995-07-11 |
| D350705 | Audible signal for alarm units | — | 1994-09-20 |
| 5287084 | Thin buzzer | — | 1994-02-15 |
| D339544 | Audible signal for alarm units | — | 1993-09-21 |