Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5355119 | Apparatus and methods for controlling a signal device | — | 1994-10-11 |
| 4701743 | Signal apparatus | W. Kenneth Menke | 1987-10-20 |
| 4238787 | Electronic siren amplifier | W. Kenneth Menke | 1980-12-09 |