FR433219A - Light projection device - Google Patents

Light projection device

Info

Publication number
FR433219A
FR433219A FR433219A FR433219DA FR433219A FR 433219 A FR433219 A FR 433219A FR 433219 A FR433219 A FR 433219A FR 433219D A FR433219D A FR 433219DA FR 433219 A FR433219 A FR 433219A
Authority
FR
France
Prior art keywords
projection device
light projection
light
projection
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
FR433219A
Other languages
French (fr)
Inventor
Francis John Boucher
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 FR433219A publication Critical patent/FR433219A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L19/00—Lanterns, e.g. hurricane lamps or candle lamps
    • 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
    • G08B5/38—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources using flashing light

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR433219A 1910-09-19 1911-08-12 Light projection device Expired FR433219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU433219X 1910-09-19

Publications (1)

Publication Number Publication Date
FR433219A true FR433219A (en) 1911-12-28

Family

ID=1475244

Family Applications (1)

Application Number Title Priority Date Filing Date
FR433219A Expired FR433219A (en) 1910-09-19 1911-08-12 Light projection device

Country Status (1)

Country Link
FR (1) FR433219A (en)

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