Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6788251 | Method and apparatus for interference reduction in a positioning system | Sergey Lyusin | 2004-09-07 |
| 4424421 | Apparatus for testing subscriber carrier systems | Thomas Streenan | 1984-01-03 |
| 4333175 | Telephone system using pulse code modulated subscriber lines | R. Gordon Cook | 1982-06-01 |
| 4314368 | Receiver for pulse code multiplexed signals | Calvin DeCoursey | 1982-02-02 |
| 4196320 | Method and means for powering telephone span lines | — | 1980-04-01 |
| 4196421 | PCM encoder with variable set-up intervals | Calvin DeCoursey | 1980-04-01 |