Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947454 | Radio with digitally controlled audio processor | — | 1990-08-07 |
| 4905305 | Method and apparatus for controlling the frequency of operation and at least one further variable operating parameter of a radio communications device | Ralph R. Sherman, Jr. | 1990-02-27 |
| 4887311 | Radio with options board | Robert P. Dixon | 1989-12-12 |
| 4870699 | Method and apparatus for controlling the frequency of operation and at least one further variable operating parameter of a radio communications device | Ralph R. Sherman, Jr. | 1989-09-26 |
| 4792986 | Portable radio system with externally programmable universal device connector | Ralph R. Sherman, Jr. | 1988-12-20 |
| 4709201 | Portable radio battery pack with on-off switch | Henry A. Schaefer | 1987-11-24 |
| 4688262 | Externally connectable control unit for a portable radio | Henry A. Schaefer | 1987-08-18 |
| 4673861 | Battery charger/remote control for portable radio devices | George S. Dubovsky | 1987-06-16 |
| 4361896 | Binary detecting and threshold circuit | — | 1982-11-30 |