Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860339 | Programmable telephone/dictation terminal and method of operating same | Nicholas A. D'Agosto, III, David B. Chamberlin, Jy-Hong Su, Emil F. Jachmann | 1989-08-22 |
| 4817127 | Modular dictation/transcription system | David B. Chamberlin, John J. Dwyer, Emil F. Jachmann, Jeremy Saltzman | 1989-03-28 |