FR392644A - Intermediate switch panel for central battery telephone networks - Google Patents

Intermediate switch panel for central battery telephone networks

Info

Publication number
FR392644A
FR392644A FR392644A FR392644DA FR392644A FR 392644 A FR392644 A FR 392644A FR 392644 A FR392644 A FR 392644A FR 392644D A FR392644D A FR 392644DA FR 392644 A FR392644 A FR 392644A
Authority
FR
France
Prior art keywords
switch panel
telephone networks
intermediate switch
central battery
battery telephone
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
FR392644A
Other languages
French (fr)
Inventor
Pierre Le Goaziou
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.)
PIERRE LE GOAZIOU
Original Assignee
PIERRE LE GOAZIOU
Filing date
Publication date
Application filed by PIERRE LE GOAZIOU filed Critical PIERRE LE GOAZIOU
Application granted granted Critical
Publication of FR392644A publication Critical patent/FR392644A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/24—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane
    • G08B5/28—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane with hinged flap or arm
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/02—Constructional details

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR392644A 1908-07-03 Intermediate switch panel for central battery telephone networks Expired FR392644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR10441T

Publications (1)

Publication Number Publication Date
FR392644A true FR392644A (en) 1908-12-01

Family

ID=8629767

Family Applications (3)

Application Number Title Priority Date Filing Date
FR11111A Expired FR11111E (en) Intermediate switch panel for central battery telephone networks
FR10441A Expired FR10441E (en) Intermediate switch panel for central battery telephone networks
FR392644A Expired FR392644A (en) 1908-07-03 Intermediate switch panel for central battery telephone networks

Family Applications Before (2)

Application Number Title Priority Date Filing Date
FR11111A Expired FR11111E (en) Intermediate switch panel for central battery telephone networks
FR10441A Expired FR10441E (en) Intermediate switch panel for central battery telephone networks

Country Status (1)

Country Link
FR (3) FR392644A (en)

Also Published As

Publication number Publication date
FR10441E (en) 1909-07-03
FR11111E (en) 1909-12-09

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