Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5337356 | Ringing circuit for use in portable telephone set | — | 1994-08-09 |
| 5317622 | Ringing circuit for use in a telephone set for detecting a mobile mode or a portable mode of the telephone set | — | 1994-05-31 |
| 5303284 | Ringing circuit for use in portable telephone set | — | 1994-04-12 |