Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11532216 | Collapsible warning device and method for emitting a light signal | Raymond T. Houle, David A. Mitchell | 2022-12-20 |
| 9260828 | Safety marker | Raymond T. Houle, Michel Juneau, André Villemaire | 2016-02-16 |