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Application filed by Maximilian Dr MathiasfiledCriticalMaximilian Dr Mathias
Publication of CH204089ApublicationCriticalpatent/CH204089A/de
H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
H04M15/38—Charging, billing or metering by apparatus other than mechanical step-by-step counter type
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Meter Arrangements
(AREA)
CH204089D1938-07-121938-07-15Vorrichtung zur Gebührenregistrierung für Fernsprechanlagen.
CH204089A
(de)