Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4998242 | Virtual tributary cross connect switch and switch network utilizing the same | — | 1991-03-05 |
| 4967405 | System for cross-connecting high speed digital SONET signals | William T. Cochran | 1990-10-30 |
| 4914429 | Switch components and multiple data rate non-blocking switch network utilizing the same | — | 1990-04-03 |
| 4641301 | Telecommunication switching system and priority arrangement used therein | Francoise C. G. Van Simaeys, Anna M. C. Leurs, Alan J. Lawrence, John M. Cotton | 1987-02-03 |
| 4608684 | Digital switching systems employing multi-channel frame association apparatus | — | 1986-08-26 |
| 4598396 | Duplex transmission mechanism for digital telephones | William G. Bartholomay | 1986-07-01 |
| 4456991 | Telephone line circuit and system | Ramon C. W. Chea, Jr., Santanu Das, Jozef Cornu, Johan M. R. Danneels, Jean Taeymans | 1984-06-26 |
| 4439826 | Diagnostic system for a distributed control switching network | Alan J. Lawrence | 1984-03-27 |
| 4293946 | Trilateral duplex path conferencing system with broadcast capability | Michael L. Kuras, Herbert J. Toegel | 1981-10-06 |
| 4201890 | Multiport digital switching element | Alan J. Lawrence, Jeffrey N. Denenberg, Murray Rubinstein | 1980-05-06 |