Telephone incorporating binary coded decimal time display

Details Telephone incorporating binary coded decimal time display Telephone incorporating binary coded decimal time display

1973-10-23

1976-03-09

Cooper, William C.

58 19R, 58 23A, 58 23AC, 58152T, 179 81C, 179 90K, 58 50R, G04C 1702

Patent

active

039432882

ABSTRACT:
A combined telephone and binary clock is disclosed in which light emitting diodes are formed in the telephone push buttons and are provided with a binary coded decimal display so that telephone push buttons provide an indication of time. The clock may be periodically preset by a signal transmitted over the telephone line. An alarm circuit is included to cause the telephone to ring at a predetermined or preselected time.

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patent: 3281541 (1966-10-01), Learner
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patent: 3410082 (1968-11-01), Taylor et al.
patent: 3664116 (1972-05-01), Emerson et al.
patent: 3707071 (1972-12-01), Walton
patent: 3744235 (1973-07-01), Kratomi
patent: 3750384 (1973-08-01), Miller et al.
patent: 3841082 (1974-10-01), Cuevas et al.
patent: 3889459 (1975-06-01), Lu

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