Woodpecker simulating telephone ringing device

Details Woodpecker simulating telephone ringing device Woodpecker simulating telephone ringing device

1992-04-08

1994-11-29

Dwyer, James L.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379374, H04M 100

Patent

active

053696980

ABSTRACT:
A telephone ringing device in the form of a simulated bird such as a woodpecker, wherein the bird is adapted to move in a manner similar to that of a live woodpecker tapping a tree trunk when a telephone ringing signal is received.

REFERENCES:
patent: 955676 (1910-04-01), Oehmen
patent: 1307467 (1919-06-01), Van Heusen
patent: 1905937 (1933-11-01), Hoag
patent: 2251635 (1941-08-01), Riebe
patent: 2269098 (1942-01-01), Garnett
patent: 2375281 (1945-05-01), Cameron
patent: 4301335 (1981-11-01), Jucker et al.
patent: 4721437 (1988-01-01), Mitamura et al.
patent: 4727572 (1988-02-01), Whitney
patent: 4864607 (1989-09-01), Mitamura et al.

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