Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5321745 | Adaptive efficient single/dual tone decoder apparatus and method for identifying call-progression signals | Ron A. Perry, Robert J. Machuta, Clifford N. Baumann | 1994-06-14 |
| 5319703 | Apparatus and method for identifying speech and call-progression signals | — | 1994-06-07 |