Subscription card for a videotex receiver

Registers – Systems controlled by data bearing records

Patent

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Details

235487, 235492, G06K 1906

Patent

active

043520111

ABSTRACT:
A subscription card for videotex receivers, comprising:

REFERENCES:
patent: 4058830 (1977-11-01), Guinet
patent: 4092524 (1978-05-01), Moreno
patent: 4105156 (1978-08-01), Dethloff
patent: 4115662 (1978-09-01), Guinet
patent: 4204113 (1980-05-01), Giraud
patent: 4211919 (1980-07-01), Ugon

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