Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5831515 | Electronic siren apparatus including an integrated handheld microphone and control handle | John Sidney Stewart, William H. Carson, Gregg Santangini | 1998-11-03 |
| D367435 | Combined electronic siren and handheld microphone | John Sidney Stewart, William H. Carson, Gregg Santangini | 1996-02-27 |
| 4565274 | Friction clutch element | — | 1986-01-21 |