FR527812A - Magnetic call device with indicator light - Google Patents

Magnetic call device with indicator light

Info

Publication number
FR527812A
FR527812A FR527812A FR527812DA FR527812A FR 527812 A FR527812 A FR 527812A FR 527812 A FR527812 A FR 527812A FR 527812D A FR527812D A FR 527812DA FR 527812 A FR527812 A FR 527812A
Authority
FR
France
Prior art keywords
indicator light
call device
magnetic
magnetic call
indicator
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
FR527812A
Other languages
French (fr)
Inventor
Pierre Langet
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 LANGET
Original Assignee
PIERRE LANGET
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 PIERRE LANGET filed Critical PIERRE LANGET
Application granted granted Critical
Publication of FR527812A publication Critical patent/FR527812A/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
    • G08B5/28—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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR527812A 1920-12-01 1920-12-01 Magnetic call device with indicator light Expired FR527812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR527812T 1920-12-01

Publications (1)

Publication Number Publication Date
FR527812A true FR527812A (en) 1921-10-31

Family

ID=8921604

Family Applications (1)

Application Number Title Priority Date Filing Date
FR527812A Expired FR527812A (en) 1920-12-01 1920-12-01 Magnetic call device with indicator light

Country Status (1)

Country Link
FR (1) FR527812A (en)

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