Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8239829 | User co-routine interface for customizing SIP and SDP protocols | Charles J. Breidenstein | 2012-08-07 |
| 8125983 | VoIP telecommunications switch | Paul Reynolds | 2012-02-28 |
| 4850011 | Key telephone system providing selection of key or PBX operational modes | David Day | 1989-07-18 |
| 4527012 | Communications switching system with modular switching communications peripheral and host computer | Jerome S. Caplan, Robert R. Laman, Christine Navarro | 1985-07-02 |