FR738696A - Device giving optical illusions - Google Patents

Device giving optical illusions

Info

Publication number
FR738696A
FR738696A FR738696DA FR738696A FR 738696 A FR738696 A FR 738696A FR 738696D A FR738696D A FR 738696DA FR 738696 A FR738696 A FR 738696A
Authority
FR
France
Prior art keywords
device giving
optical illusions
giving optical
illusions
optical
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
Sydney Charles Gill
Sydney Dallaway
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 FR738696A publication Critical patent/FR738696A/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
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/12—Signs, boards or panels, illuminated from behind the insignia using a transparent mirror or other light reflecting surface transparent to transmitted light whereby a sign, symbol, picture or other is visible only when illuminated

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR738696D 1932-02-20 1932-06-16 Device giving optical illusions Expired FR738696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB738696X 1932-02-20

Publications (1)

Publication Number Publication Date
FR738696A true FR738696A (en) 1932-12-28

Family

ID=10495848

Family Applications (1)

Application Number Title Priority Date Filing Date
FR738696D Expired FR738696A (en) 1932-02-20 1932-06-16 Device giving optical illusions

Country Status (1)

Country Link
FR (1) FR738696A (en)

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