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GB143277A - Machine switching telephone exchange systems - Google Patents

Machine switching telephone exchange systems

Info

Publication number
GB143277A
GB143277A GB730918A GB730918A GB143277A GB 143277 A GB143277 A GB 143277A GB 730918 A GB730918 A GB 730918A GB 730918 A GB730918 A GB 730918A GB 143277 A GB143277 A GB 143277A
Authority
GB
United Kingdom
Prior art keywords
relay
switch
register
selector
moves
Prior art date
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.)
Expired
Application number
GB730918A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WESTERN ELECTRIC CO Ltd
AT&T Corp
Original Assignee
WESTERN ELECTRIC CO Ltd
Western Electric Co Inc
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 WESTERN ELECTRIC CO Ltd, Western Electric Co Inc filed Critical WESTERN ELECTRIC CO Ltd
Priority to GB730918A priority Critical patent/GB143277A/en
Priority claimed from US268649A external-priority patent/US1518815A/en
Priority to DE1920B0092934 priority patent/DE401006C/de
Publication of GB143277A publication Critical patent/GB143277A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
GB730918A 1918-05-01 1918-05-01 Machine switching telephone exchange systems Expired GB143277A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB730918A GB143277A (en) 1918-05-01 1918-05-01 Machine switching telephone exchange systems
DE1920B0092934 DE401006C (de) 1918-05-01 1920-02-20 Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB730918A GB143277A (en) 1918-05-01 1918-05-01 Machine switching telephone exchange systems
US268649A US1518815A (en) 1918-12-28 1918-12-28 Machine-switching telephone-exchange system

Publications (1)

Publication Number Publication Date
GB143277A true GB143277A (en) 1920-05-27

Family

ID=26241338

Family Applications (1)

Application Number Title Priority Date Filing Date
GB730918A Expired GB143277A (en) 1918-05-01 1918-05-01 Machine switching telephone exchange systems

Country Status (2)

Country Link
DE (1) DE401006C (de)
GB (1) GB143277A (de)

Also Published As

Publication number Publication date
DE401006C (de) 1924-08-30

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