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Publication of FR383761ApublicationCriticalpatent/FR383761A/fr
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
H04M1/65—Recording arrangements for recording a message from the calling party
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Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
FR383761D1907-11-081907-11-08Dispositif actionné électromagnétiquement pour écrire les conversations
ExpiredFR383761A
(fr)