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 JP316976ApriorityCriticalpatent/JPS52109807A/ja
Publication of JPS52109807ApublicationCriticalpatent/JPS52109807A/ja
Publication of JPS5415641B2publicationCriticalpatent/JPS5415641B2/ja
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
H04M1/315—Clutches; Spring assemblies; Speed regulators, e.g. centrifugal brakes
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
JP316976A1976-01-161976-01-16Rotary type dial for telephone
GrantedJPS52109807A
(en)