Cordless headset telephone

Details Cordless headset telephone Cordless headset telephone

1989-03-20

1989-11-21

Lev, Robert

Telephonic communications

Audio message storage, retrieval, or synthesis

455 90, 381183, H04Q 704

Patent

active

048827452

ABSTRACT:
Cordless headset telephone system including at least one headset having at least one earpiece, a swingout microphone and a headset transmitter and receiver connected to a common antenna, at least one base having a base transmitter and receiver having a common antenna, respectively tuned to the headset transmitter and receiver, and apparatus included in the base circuit for seizing at least one telephone line.

REFERENCES:
patent: 3889190 (1975-06-01), Palmer
patent: 3916312 (1975-10-01), Campbell
patent: 4122304 (1978-10-01), Mallien II
patent: 4340972 (1982-07-01), Heist
patent: 4481382 (1964-11-01), Villa Real
patent: 4484029 (1984-11-01), Kenney
patent: 4491699 (1985-01-01), Walker
patent: 4591661 (1986-05-01), Benedetto et al.
patent: 4634810 (1987-01-01), Grassl et al.
patent: 4640987 (1987-02-01), Tsukana et al.
patent: 4650931 (1987-03-01), Tsukada et al.
patent: 4706274 (1987-11-01), Baker et al.
patent: 4731812 (1988-03-01), Akerberg
patent: 4768218 (1988-08-01), Yorita

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