Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D315350 | Earphone | — | 1991-03-12 |
| D299451 | Speech synthesizer activated by reading of a magnetic card | — | 1989-01-17 |
| D292916 | Non-electronic sound amplifier | — | 1987-11-24 |
| D286873 | Non-electronic sound amplifier headset or the like | — | 1986-11-25 |
| D261140 | Television camera | — | 1981-10-06 |