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Priority to FR523ApriorityCriticalpatent/FR1430966A/fr
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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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Signal Processing
(AREA)
FR523A1964-12-311964-12-31Appareil automatique répondeur-enregistreur-informateur pour la réception des appels téléphoniques
ExpiredFR1430966A
(fr)