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Publication of FR454829ApublicationCriticalpatent/FR454829A/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
H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial
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Engineering & Computer Science
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Signal Processing
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Transmission Devices
(AREA)
Telephone Set Structure
(AREA)
FR454829A1912-02-281913-02-27Transmetteur d'impulsions électriques pour les installations téléphoniques automatiques
ExpiredFR454829A
(fr)