Initial rate override circuit

Details Initial rate override circuit Initial rate override circuit

1978-08-02

1980-01-29

Brigance, Gerald

179 65, H04M 1702

Patent

active

041862759

ABSTRACT:
A circuit which overrides the initial rate circuit included in a coin telephone, to allow the central office to perform coin collect and refund operations independent of whether or not the initial rate has been deposited. This circuit operates in response to coin battery applied by the central office to operate a rate relay which connects the included coin relay to the central office.

REFERENCES:
patent: 3409739 (1968-11-01), Joel, Jr.
patent: 3435146 (1969-03-01), Busala et al.
patent: 3760101 (1973-09-01), Burns
patent: 3798470 (1974-03-01), Burns et al.
patent: 3881062 (1975-04-01), Beeman et al.
patent: 3890468 (1975-06-01), Burns et al.

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