Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6148213 | Method and apparatus for accessing a telephone answering device from a cordless telephone portable unit | Howard M. Singer | 2000-11-14 |
| 6029071 | Apparatus and method for synchronizing a cordless telephone base unit and multiple portable units on a common communication channel | William J. Nealon, Siegfried F. Rehwinkel, Walter Tomkoski, Hon-Chi Yu | 2000-02-22 |
| 5953656 | Method and apparatus for remotely accessing a telephone answering device | — | 1999-09-14 |
| 5933774 | Location registering apparatus for use with a cellular telephone mobile station | — | 1999-08-03 |
| 5689549 | Cordless telephone base unit arranged for operating with multiple portable units | William J. Nealon, Siegfried F. Rehwinkel, Walter Tomkoski, Hon-Chi Yu | 1997-11-18 |
| 4677423 | ADPCM coder-decoder including partial band energy transition detection | Nevio Benvenuto | 1987-06-30 |
| 4519073 | Bit compression multiplexer | Stephen M. Walters | 1985-05-21 |