FR859296A - Appareil de signalisation d'abris contre les bombardements aériens - Google Patents

Appareil de signalisation d'abris contre les bombardements aériens

Info

Publication number
FR859296A
FR859296A FR859296DA FR859296A FR 859296 A FR859296 A FR 859296A FR 859296D A FR859296D A FR 859296DA FR 859296 A FR859296 A FR 859296A
Authority
FR
France
Prior art keywords
bombardments
shelter
signaling device
device against
against aerial
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)
Inventor
Deplan He
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 filed Critical
Application granted granted Critical
Publication of FR859296A publication Critical patent/FR859296A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. visible personal calling systems or 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)
FR859296D 1939-05-05 1939-05-05 Appareil de signalisation d'abris contre les bombardements aériens Expired FR859296A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR859296T 1939-05-05

Publications (1)

Publication Number Publication Date
FR859296A true FR859296A (fr) 1940-12-14

Family

ID=9330318

Family Applications (1)

Application Number Title Priority Date Filing Date
FR859296D Expired FR859296A (fr) 1939-05-05 1939-05-05 Appareil de signalisation d'abris contre les bombardements aériens

Country Status (1)

Country Link
FR (1) FR859296A (fr)

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