FR429367A - Warning device applicable to telephone switchboards - Google Patents

Warning device applicable to telephone switchboards

Info

Publication number
FR429367A
FR429367A FR429367DA FR429367A FR 429367 A FR429367 A FR 429367A FR 429367D A FR429367D A FR 429367DA FR 429367 A FR429367 A FR 429367A
Authority
FR
France
Prior art keywords
warning device
device applicable
telephone switchboards
switchboards
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
Other languages
French (fr)
Inventor
Emile Fauvin
Eugene Amiot
Edouard Cheneaux
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR429367A publication Critical patent/FR429367A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G08B5/30—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 rotating or oscillating members, e.g. vanes

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR429367D 1911-04-13 1911-04-13 Warning device applicable to telephone switchboards Expired FR429367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR429367T 1911-04-13

Publications (1)

Publication Number Publication Date
FR429367A true FR429367A (en) 1911-09-21

Family

ID=1471704

Family Applications (1)

Application Number Title Priority Date Filing Date
FR429367D Expired FR429367A (en) 1911-04-13 1911-04-13 Warning device applicable to telephone switchboards

Country Status (1)

Country Link
FR (1) FR429367A (en)

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