Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5638047 | Sound activated transmitter | Gary Paley, David T. Waugh | 1997-06-10 |
| 5576690 | Combined audible and visual signaling device | David T. Waugh | 1996-11-19 |
| 4389679 | Language information system | Richard S. Missan | 1983-06-21 |
| 4373158 | Device for altering encoded data | — | 1983-02-08 |