FR31471E - Automatic switching system - Google Patents

Automatic switching system

Info

Publication number
FR31471E
FR31471E FR31471DA FR31471E FR 31471 E FR31471 E FR 31471E FR 31471D A FR31471D A FR 31471DA FR 31471 E FR31471 E FR 31471E
Authority
FR
France
Prior art keywords
switching system
automatic switching
automatic
switching
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
Other languages
French (fr)
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.)
COMAPGNIE FRANCAISE POUR L EXP
Compagnie Francaise Thomson Houston SA
Original Assignee
COMAPGNIE FRANCAISE POUR L EXP
Compagnie Francaise Thomson Houston SA
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 granted granted Critical
Publication of FR31471E publication Critical patent/FR31471E/en
Application filed by COMAPGNIE FRANCAISE POUR L EXP, Compagnie Francaise Thomson Houston SA filed Critical COMAPGNIE FRANCAISE POUR L EXP
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)
  • Monitoring And Testing Of Exchanges (AREA)
FR31471D 1923-05-18 1925-08-17 Automatic switching system Expired FR31471E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR570941T 1923-05-18

Publications (1)

Publication Number Publication Date
FR31471E true FR31471E (en) 1924-03-14

Family

ID=8882589

Family Applications (5)

Application Number Title Priority Date Filing Date
FR570941D Expired FR570941A (en) 1923-05-18 1923-05-18 Automatic switching system
FR28111D Expired FR28111E (en) 1923-05-18 1923-08-01
FR29482D Expired FR29482E (en) 1923-05-18 1924-04-29
FR31471D Expired FR31471E (en) 1923-05-18 1925-08-17 Automatic switching system
FR31705D Expired FR31705E (en) 1923-05-18 1925-09-07 Automatic switching system

Family Applications Before (3)

Application Number Title Priority Date Filing Date
FR570941D Expired FR570941A (en) 1923-05-18 1923-05-18 Automatic switching system
FR28111D Expired FR28111E (en) 1923-05-18 1923-08-01
FR29482D Expired FR29482E (en) 1923-05-18 1924-04-29

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR31705D Expired FR31705E (en) 1923-05-18 1925-09-07 Automatic switching system

Country Status (4)

Country Link
US (1) US1556474A (en)
DE (2) DE490255C (en)
FR (5) FR570941A (en)
GB (2) GB223985A (en)

Also Published As

Publication number Publication date
FR29482E (en) 1925-08-07
GB223985A (en) 1924-10-31
GB233339A (en) 1926-09-27
FR570941A (en) 1924-05-09
FR28111E (en) 1925-01-15
US1556474A (en) 1925-10-06
DE505408C (en) 1930-08-19
DE490255C (en) 1930-01-29
FR31705E (en) 1927-06-10

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