Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821286 | Quaternary signal regenerator | James F. Graczyk, John J. Ludwick | 1989-04-11 |
| 4739196 | Wide range linear inpedance controller using junction field effect transistors | John J. Ludwick | 1988-04-19 |
| 4663583 | Automatically variable phase characteristic all-pass circuit | John J. Ludwick | 1987-05-05 |