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Schallband Syndikat AG
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Schallband Syndikat AG
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Application filed by Schallband Syndikat AGfiledCriticalSchallband Syndikat AG
Application grantedgrantedCritical
Publication of FR900294ApublicationCriticalpatent/FR900294A/en
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)
FR900294D1939-02-111943-12-02
Device for automatic recording of telephone conversations
ExpiredFR900294A
(en)