Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5831515 | Electronic siren apparatus including an integrated handheld microphone and control handle | John Sidney Stewart, William H. Carson, Mick Cameron | 1998-11-03 |
| D367435 | Combined electronic siren and handheld microphone | John Sidney Stewart, William H. Carson, Mick Cameron | 1996-02-27 |