Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Treuunternehmen PromundofiledCriticalTreuunternehmen Promundo
Publication of CH296851ApublicationCriticalpatent/CH296851A/de
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
H04M1/647—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations using magnetic tape
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
CH296851D1951-02-031951-02-03Telephonograph mit einer Einrichtung zur Einleitung der Wiederholung des Ansagetextes des Antwortgebers.
CH296851A
(de)