CH247351A - Arrangement of selector switch control circuits for automatic telephone systems. - Google Patents

Arrangement of selector switch control circuits for automatic telephone systems.

Info

Publication number
CH247351A
CH247351A CH247351DA CH247351A CH 247351 A CH247351 A CH 247351A CH 247351D A CH247351D A CH 247351DA CH 247351 A CH247351 A CH 247351A
Authority
CH
Switzerland
Prior art keywords
arrangement
switch control
control circuits
selector switch
telephone systems
Prior art date
Application number
Other languages
French (fr)
Inventor
Automatic Telephone El Limited
Original Assignee
Automatic Telephone & Elect
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 Automatic Telephone & Elect filed Critical Automatic Telephone & Elect
Publication of CH247351A publication Critical patent/CH247351A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/50—Conversion between different kinds of signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
CH247351D 1942-04-20 1943-04-19 Arrangement of selector switch control circuits for automatic telephone systems. CH247351A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB247351X 1942-04-20

Publications (1)

Publication Number Publication Date
CH247351A true CH247351A (en) 1947-02-28

Family

ID=10216422

Family Applications (2)

Application Number Title Priority Date Filing Date
CH247351D CH247351A (en) 1942-04-20 1943-04-19 Arrangement of selector switch control circuits for automatic telephone systems.
CH251036D CH251036A (en) 1942-04-20 1943-04-19 Telephone installation.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH251036D CH251036A (en) 1942-04-20 1943-04-19 Telephone installation.

Country Status (5)

Country Link
US (1) US2422285A (en)
CH (2) CH247351A (en)
FR (1) FR933089A (en)
GB (1) GB556920A (en)
NL (1) NL71148C (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1463972A (en) * 1923-08-07 Automatic telephone system
US1503923A (en) * 1918-05-06 1924-08-05 Stromberg Carlson Telephone Telephone switching system
US2090205A (en) * 1934-06-21 1937-08-17 Siemens Brothers & Co Ltd Electric remote control system
US2058216A (en) * 1935-05-11 1936-10-20 Bell Telephone Labor Inc Signaling system
GB469664A (en) * 1936-01-29 1937-07-29 Automatic Electric Co Ltd Improvements in automatic switches for use in telephone or like systems

Also Published As

Publication number Publication date
US2422285A (en) 1947-06-17
GB556920A (en) 1943-10-27
FR933089A (en) 1948-04-09
CH251036A (en) 1947-09-30
NL71148C (en)

Similar Documents

Publication Publication Date Title
FR924918A (en) Selector control circuits
CH247351A (en) Arrangement of selector switch control circuits for automatic telephone systems.
CH283265A (en) Automatic telephone switchboard.
CH235653A (en) Tap changer on tap transformers.
CH230349A (en) Automatic installation overcurrent switch.
CH289854A (en) Automatic telephone installation.
FR980739A (en) Automatic or semi-automatic telephone systems
FR901458A (en) Automatic interurban telephony selector control device
CH247353A (en) Selection switch for automatic telephone installation.
CH247350A (en) Selection switch for automatic telephone installation.
CH276280A (en) Automatic telecommunication installation.
ES157145A1 (en) TELEPHONE OR SIMILAR SYSTEMS FOR ESTABLISHING CONNECTIONS WITH A SWITCHING DEVICE CONTAINING ONE OR MORE STEPS GROUP SELECTING SWITCHES
FR895485A (en) Automatic or semi-automatic telephone systems
CH229753A (en) Relay breaker device on selector.
FR890149A (en) Automatic control device for talking machines
AU119972B2 (en) Improvements in selector operating circuits for use in automatic telephone or like systems
AU932843A (en) Improvements in selector operating circuits for use in automatic telephone or like systems
IE17613L (en) Automatic telephone switching systems.
FR904574A (en) Assembly for telephone systems with automatic operation by selectors
FR52169E (en) Automatic installation switch
FR888421A (en) Gearshift control devices improvements
CH225896A (en) Circuit arrangement for line selectors without control switches in telephone systems.
DK75398C (en) Device for automatic telephone systems.
AU118987B2 (en) Selector switch for telecommunication systems
FR878574A (en) Contact selector device for remote control systems