Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4417205 | Detection apparatus utilizing a hall effect device | David L. Vonder | 1983-11-22 |
| 4355209 | Programmable line circuit | — | 1982-10-19 |
| 4318074 | Contactless electromagnetic relay | — | 1982-03-02 |
| 4191859 | Loop, dial pulse and ring trip detection circuit with capacitive shunt network | — | 1980-03-04 |