Telephone with digit cancellation

Details Telephone with digit cancellation Telephone with digit cancellation

1983-11-17

1987-11-17

Lev, Robert

Telephonic communications

Supervisory or control line signaling

Substation originated

379355, H04M 114

Patent

active

047078545

ABSTRACT:
An improvement in telephone equipment which enables a user to cancel the wrong digit of a misdialed number regardless of its position in the number without cancelling other digits in the number.

REFERENCES:
patent: Re31649 (1984-08-01), Brodbeck
patent: 3920926 (1975-11-01), Lenaerts et al.
patent: 4090037 (1978-05-01), Benjamin et al.
patent: 4160879 (1979-07-01), Sullivan et al.
patent: 4277651 (1981-07-01), Fisher, II et al.
patent: 4304968 (1981-12-01), Klausner et al.

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