FR557870A - Automatic lighting device - Google Patents

Automatic lighting device

Info

Publication number
FR557870A
FR557870A FR557870DA FR557870A FR 557870 A FR557870 A FR 557870A FR 557870D A FR557870D A FR 557870DA FR 557870 A FR557870 A FR 557870A
Authority
FR
France
Prior art keywords
lighting device
automatic lighting
automatic
lighting
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
Maurice Silberchatz
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 FR557870A publication Critical patent/FR557870A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/34—Illuminated signs; Luminous advertising with light sources co-operating with movable members, e.g. with shutters to cover or uncover the light source

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR557870D 1922-10-27 1922-10-27 Automatic lighting device Expired FR557870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR557870T 1922-10-27

Publications (1)

Publication Number Publication Date
FR557870A true FR557870A (en) 1923-08-17

Family

ID=8941176

Family Applications (1)

Application Number Title Priority Date Filing Date
FR557870D Expired FR557870A (en) 1922-10-27 1922-10-27 Automatic lighting device

Country Status (1)

Country Link
FR (1) FR557870A (en)

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