Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5202919 | Metallic channel unit network | — | 1993-04-13 |
| 4993063 | Channel unit interface circuit | — | 1991-02-12 |
| 4961218 | Enhanced line powered amplifier | — | 1990-10-02 |
| 4852160 | Channel unit interface circuit | George Kummer | 1989-07-25 |
| 4771449 | Data station termination circuit | Lisa Danforth | 1988-09-13 |
| 4603234 | Switching circuit including current limiting and initializing signal isolation | John M. Huet | 1986-07-29 |
| 4577064 | Auto-balance circuit for battery feed in a telephone circuit | John M. Huft | 1986-03-18 |
| 4463307 | Negative inductance multiplier circuit including temperature compensation | Thomas J. Barzen | 1984-07-31 |
| 4424499 | Equalizer circuit for a repeater | — | 1984-01-03 |
| 4331842 | Voice frequency repeater and term sets and other circuits therefor | — | 1982-05-25 |
| 4192974 | Multi-section apparatus for improving signal transmission through telephone transmission lines | — | 1980-03-11 |