SE304316BSE2483/65ASE248365ASE304316BSE 304316 BSE304316 BSE 304316BSE 2483/65 ASE2483/65 ASE 2483/65ASE 248365 ASE248365 ASE 248365ASE 304316 BSE304316 BSE 304316B
Authority
SE
Sweden
Application number
SE2483/65A
Inventor
P Claesson
L Buelow
Original Assignee
P Claesson
L Buelow
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 P Claesson, L BuelowfiledCriticalP Claesson
Priority to SE2483/65ApriorityCriticalpatent/SE304316B/xx
Publication of SE304316BpublicationCriticalpatent/SE304316B/xx
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
H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies