Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4357496 | Keypad logic interface circuit | — | 1982-11-02 |
| 4352958 | Electronically-switched multifrequency generator with transducer control | Paul C. Davis, Raymond G. Jackson, Dale H. Nelson, DeWitt G. Ong, Brian Albert Wittman | 1982-10-05 |