Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5257260 | Expanding switching capability of a time division communication system by multiplexing groups of circuits into successions | Charles J. Breidenstein, Jerome S. Caplan | 1993-10-26 |
| 5239542 | Time division multiplex switching system for interconnecting telephone circuits which operate in accordance with different signalling systems and call formats | Charles J. Breidenstein, Jerome S. Caplan | 1993-08-24 |
| 4521879 | Digital private branch exchange | Stanley L. Russell, William A. Oswald, Charles J. Breidenstein, Karam V. Narula | 1985-06-04 |
| 4228536 | Time division digital communication system | Charles J. Breidenstein | 1980-10-14 |