BE368808A - - Google Patents

Info

Publication number
BE368808A
BE368808A BE368808DA BE368808A BE 368808 A BE368808 A BE 368808A BE 368808D A BE368808D A BE 368808DA BE 368808 A BE368808 A BE 368808A
Authority
BE
Belgium
Prior art keywords
elements
faces
numbers
letters
prismatic
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE368808A publication Critical patent/BE368808A/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/14—Advertising or display means not otherwise provided for using special optical effects displaying different signs depending upon the view-point of the observer

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
BE368808D BE368808A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
BE368808A true BE368808A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=40571

Family Applications (1)

Application Number Title Priority Date Filing Date
BE368808D BE368808A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
BE (1) BE368808A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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