Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4355403 | Teletypewriter line keyer with switching current regulator | John W. Spaniol, Ronald E. Tollum | 1982-10-19 |
| 4317209 | FSK Tone generator circuit | — | 1982-02-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4355403 | Teletypewriter line keyer with switching current regulator | John W. Spaniol, Ronald E. Tollum | 1982-10-19 |
| 4317209 | FSK Tone generator circuit | — | 1982-02-23 |