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 Deutsche Fernsprecher GmbhfiledCriticalDeutsche Fernsprecher Gmbh
Publication of CH350689ApublicationCriticalpatent/CH350689A/de
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/26—Devices for calling a subscriber
H04M1/30—Devices which can set up and transmit only one digit at a time
H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Gears, Cams
(AREA)
Gear Transmission
(AREA)
CH350689D1956-07-211957-07-17Antriebsaggregat für Nummernschalter in Fernmelde-, insbesondere Fernsprechanlagen
CH350689A
(de)