FR541836A - Commutateur de ligne secondaire rotatif - Google Patents

Commutateur de ligne secondaire rotatif

Info

Publication number
FR541836A
FR541836A FR541836DA FR541836A FR 541836 A FR541836 A FR 541836A FR 541836D A FR541836D A FR 541836DA FR 541836 A FR541836 A FR 541836A
Authority
FR
France
Prior art keywords
line switch
secondary line
rotary secondary
rotary
switch
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
English (en)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
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 filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR541836A publication Critical patent/FR541836A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Relay Circuits (AREA)
FR541836D 1920-10-01 1921-09-30 Commutateur de ligne secondaire rotatif Expired FR541836A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US414080A US1474648A (en) 1920-10-01 1920-10-01 Automatic telephone system
US549730A US1528751A (en) 1920-10-01 1922-04-05 Telephone trunking system

Publications (1)

Publication Number Publication Date
FR541836A true FR541836A (fr) 1922-08-02

Family

ID=24194174

Family Applications (2)

Application Number Title Priority Date Filing Date
FR541836D Expired FR541836A (fr) 1920-10-01 1921-09-30 Commutateur de ligne secondaire rotatif
FR27796D Expired FR27796E (fr) 1920-10-01 1923-03-22 Commutateur de ligne secondaire rotatif

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR27796D Expired FR27796E (fr) 1920-10-01 1923-03-22 Commutateur de ligne secondaire rotatif

Country Status (3)

Country Link
US (2) US1474648A (de)
DE (2) DE393561C (de)
FR (2) FR541836A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE508254A (de) * 1951-01-22
GB2452036A (en) * 2007-08-20 2009-02-25 Adrian John Laurence Scarsbrook Baby restraining device for use with a baby changing mat

Also Published As

Publication number Publication date
FR27796E (fr) 1924-08-18
DE393561C (de) 1924-04-05
DE412664C (de) 1925-04-25
US1474648A (en) 1923-11-20
US1528751A (en) 1925-03-10

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