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Publication of FR739840ApublicationCriticalpatent/FR739840A/fr
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/26—Devices for calling a subscriber
H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
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FR739840D1931-07-101932-07-09Appareil émetteur d'impulsions, en particulier pour l'établissement de communications téléphoniques fréquemment demandées
ExpiredFR739840A
(fr)