Legal status (The legal status 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 status listed.)
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 filedfiledCritical
Priority to JP47073393ApriorityCriticalpatent/JPS5226845B2/ja
Priority to US382223Aprioritypatent/US3920909A/en
Publication of JPS4932506ApublicationCriticalpatent/JPS4932506A/ja
Publication of JPS5226845B2publicationCriticalpatent/JPS5226845B2/ja
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