Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864610 | Earpiece for a telephone headset | — | 1989-09-05 |
| D299344 | Foam ear cushion for telephone headset or similar article | — | 1989-01-10 |
| 4754484 | Convertible handset/headset for telephone | Wallace Keith Larkin | 1988-06-28 |