Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797878 | Multiple virtual multipoint modem using TDM/token throwing technique | — | 1989-01-10 |
| 4645871 | Non-interfering in-band protocol-independent diagnostic scanning in a digital multipoint communication system | Gordon Bremer, Kurt Holmquist, Richard K. Smith | 1987-02-24 |
| 4630287 | Secondary channel signalling in a QAM data point constellation | — | 1986-12-16 |
| 4627077 | Modified QAM data point constellation for secondary channel signalling | — | 1986-12-02 |
| 4558317 | Digital communication link monitoring device | — | 1985-12-10 |
| 4516216 | In-service monitoring system for data communications network | — | 1985-05-07 |
| 4381546 | System for the quantitative measurement of impairments in the communication channel of a quadrature amplitude modulation data communication system | — | 1983-04-26 |
| 4374436 | System for the monitoring and restoration of series terminals in a looped communication system | — | 1983-02-15 |
| 4335464 | Dual multipoint data transmission system modem | Gordon Bremer, William L. Betts | 1982-06-15 |
| 4273955 | System for in-service quantitative performance analysis of data communications system | — | 1981-06-16 |
| 4271527 | Double side band-quadrature carrier modulation signal structures | — | 1981-06-02 |