Dynamic Audio Signal Recording Or Reproduction Patents (Class 379/68)
- Consecutive use of recorded phrases or words to form message (Class 379/71)
- Sequential or repeated announcement during single call initiated cycle (Class 379/72)
- Plural record carrier channels (Class 379/73)
- Remote control over telephone line (Class 379/74)
- Acoustic coupling (Class 379/78)
- With specified call initiated cycle control circuitry (Class 379/79)
- At switching facility (e.g., central office, switchboard) (Class 379/84)