Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D266244 | Collapsible headset | Frank Frielingsdorf | 1982-09-21 |
| 4315112 | Speaker | — | 1982-02-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D266244 | Collapsible headset | Frank Frielingsdorf | 1982-09-21 |
| 4315112 | Speaker | — | 1982-02-09 |