Telephone visual signaling device

Details Telephone visual signaling device Telephone visual signaling device

1992-10-13

1995-04-04

Dwyer, James L.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379369, 379373, H04M 100

Patent

active

054043999

ABSTRACT:
A telephone visual signaling device is provided which consists of a telephone connected to an incoming signal line and a mechanism for producing an identifiable beam of light when the telephone receives a telephone call on the incoming signal line.

REFERENCES:
patent: 940281 (1909-11-01), Roffy
patent: 4491695 (1985-01-01), Haskins
patent: 4747133 (1988-05-01), Valenzona et al.
patent: 4982424 (1991-01-01), Saito et al.
patent: 5118319 (1992-06-01), Smith et al.
patent: 5214457 (1993-05-01), Takanashi et al.

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