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.)
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Autophon AG
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Autophon AG
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Application filed by Autophon AGfiledCriticalAutophon AG
Application grantedgrantedCritical
Publication of FR1101375ApublicationCriticalpatent/FR1101375A/fr
H04M9/00—Arrangements for interconnection not involving centralised switching
H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
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Engineering & Computer Science
(AREA)
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(AREA)
FR1101375D1953-05-281954-05-26Installation téléphonique d'abonné comprenant plusieurs lignes de réseau et plusieurs stations
ExpiredFR1101375A
(fr)