Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8112071 | System and method for connecting to an audio conference service using a mobile communications device | — | 2012-02-07 |
| 7894805 | System and method for connecting to an audio conference service using a mobile communications device | — | 2011-02-22 |
| 6009325 | Method of and apparatus for operating a cellular phone in one of two modes | Michael H. Retzer | 1999-12-28 |
| 5835785 | Multiplexed three line synchronous/full-duplex asychronous data bus and method therefor | Eric J. Overtoom | 1998-11-10 |
| 5535258 | Radio telephone interface apparatus for speed-dialing of telephone numbers | Joseph F. Cramer, Jr., George M. Korycan | 1996-07-09 |
| 5519506 | Data communication system with automatic power control | Robert F. D'Avello | 1996-05-21 |
| 5392023 | Data communication system with automatic power control | Robert F. D'Avello | 1995-02-21 |
| 5247565 | Cellular telephone with keypad controller | Philip F. Aseltine | 1993-09-21 |
| 5117450 | Cellular telephone with standard telephone set | Philip F. Aseltine | 1992-05-26 |