Telephone answering device without outgoing message tape

Details Telephone answering device without outgoing message tape Telephone answering device without outgoing message tape

1974-11-27

1976-10-05

Cardillo, Jr., Raymond F.

H04M 164

Patent

active

039846407

ABSTRACT:
A telephone answering device comprises an oscillator circuit for first producing a peculiar signal such as a small bird's twittering to notify a caller that he is calling a telephone answering device and thereafter intermittently producing "beep" tone signal to notify him that he can continue to send his message, the production of these signals being controlled by the combination of a multi-vibrator circuit and a buffer circuit connected between the oscillator circuit and the multi-vibrator circuit, thereby eliminating an outgoing message tape.

REFERENCES:
patent: 2528459 (1950-10-01), Thompson et al.
patent: 3064085 (1962-11-01), Muramatsu
patent: 3535464 (1970-10-01), Deinzer et al.
patent: 3549821 (1970-12-01), Langendorf
patent: 3794767 (1974-02-01), Todd

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