Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8189847 | Dual-frequency coaxial earphones with shared magnet | — | 2012-05-29 |
| 8077898 | Dual-frequency coaxial earphones | — | 2011-12-13 |
| 4908530 | Non-linear squelch circuit for IEEE-802. 3 protocol | — | 1990-03-13 |
| 4875205 | Crosstalk reduction in unshielded twisted-pair lines | — | 1989-10-17 |