Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4328399 | Pushbutton switch assembly for telecommunications and other input | Roger Perks | 1982-05-04 |
| 4243846 | Pushbutton switch assembly for telecommunications and other input apparatus | George V. Lenaerts, Roger Perks | 1981-01-06 |