Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288783 | Device for selectively authorizing passage through a door | Michel Charpentier | 1981-09-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288783 | Device for selectively authorizing passage through a door | Michel Charpentier | 1981-09-08 |