SE125746C1 - - Google Patents

Info

Publication number
SE125746C1
SE125746C1 SE125746DA SE125746C1 SE 125746 C1 SE125746 C1 SE 125746C1 SE 125746D A SE125746D A SE 125746DA SE 125746 C1 SE125746 C1 SE 125746C1
Authority
SE
Sweden
Prior art keywords
group
contact
groups
connection
selector
Prior art date
Application number
Other languages
English (en)
Swedish (sv)
Publication date
Publication of SE125746C1 publication Critical patent/SE125746C1/sv

Links

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
SE125746D SE125746C1 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE125746T

Publications (1)

Publication Number Publication Date
SE125746C1 true SE125746C1 (enrdf_load_stackoverflow) 1949-01-01

Family

ID=41924361

Family Applications (1)

Application Number Title Priority Date Filing Date
SE125746D SE125746C1 (enrdf_load_stackoverflow)

Country Status (1)

Country Link
SE (1) SE125746C1 (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US574707A (en) bowman
NO122453B (enrdf_load_stackoverflow)
SE125746C1 (enrdf_load_stackoverflow)
US2299212A (en) Telephone system
US1663747A (en) Telephone-exchange system
US1568039A (en) Telephone-exchange system
US2447494A (en) Telephone register control system
US2623956A (en) Telephone test selector
US2458262A (en) Relay selector circuit arranged to simultaneously test a selected group of trunks
GB617932A (en) Improvements in telephone switching systems
GB1374648A (en) Connection unit for linking subscribers to an exchange in a time- division communications switching system
US2338642A (en) Testing and signaling system
US1505171A (en) Telephone-exchange system
US1632902A (en) Testing system
US1576723A (en) Wire chief's test circuits for telephone systems
US1667385A (en) Automatic telephone system
US367219A (en) System of telephonic intercommunication
US1909087A (en) Telephone system
US324191A (en) Telephone circuit and apparatus
SE128636C1 (enrdf_load_stackoverflow)
US2021287A (en) Telephone system
US1916761A (en) Telephone exchange system
US1938213A (en) Electrical selector
US2279448A (en) Telephone system
US2550208A (en) Circuit for the transmission of identification and metering signals of calling lines