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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alois Zettler Elektrotechnische Fabrik 8000 Muenchen De GmbH
Original Assignee
Alois Zettler Elektrotechnische Fabrik 8000 Muenchen De GmbH
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 Alois Zettler Elektrotechnische Fabrik 8000 Muenchen De GmbHfiledCriticalAlois Zettler Elektrotechnische Fabrik 8000 Muenchen De GmbH
Priority to DE19803003544priorityCriticalpatent/DE3003544A1/de
Publication of DE3003544A1publicationCriticalpatent/DE3003544A1/de
Application grantedgrantedCritical
Publication of DE3003544C2publicationCriticalpatent/DE3003544C2/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