FR677062A - Automatic information system - Google Patents

Automatic information system

Info

Publication number
FR677062A
FR677062A FR677062DA FR677062A FR 677062 A FR677062 A FR 677062A FR 677062D A FR677062D A FR 677062DA FR 677062 A FR677062 A FR 677062A
Authority
FR
France
Prior art keywords
information system
automatic information
automatic
information
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.)
Rangel & Guedes Soc
Original Assignee
Rangel & Guedes Soc
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 Rangel & Guedes Soc filed Critical Rangel & Guedes Soc
Application granted granted Critical
Publication of FR677062A publication Critical patent/FR677062A/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
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR677062D 1929-05-31 1929-05-31 Automatic information system Expired FR677062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR677062T 1929-05-31

Publications (1)

Publication Number Publication Date
FR677062A true FR677062A (en) 1930-03-03

Family

ID=9020225

Family Applications (1)

Application Number Title Priority Date Filing Date
FR677062D Expired FR677062A (en) 1929-05-31 1929-05-31 Automatic information system

Country Status (1)

Country Link
FR (1) FR677062A (en)

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