Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876710 | Method and apparatus for cordless microphone communication system | John D. Reed, Thomas R. Berger | 1989-10-24 |
| 4873711 | Method and apparatus for remote talk/listen communication system | Walter J. Rozanski, Jr. | 1989-10-10 |