BE645310A - - Google Patents

Info

Publication number
BE645310A
BE645310A BE645310A BE645310A BE645310A BE 645310 A BE645310 A BE 645310A BE 645310 A BE645310 A BE 645310A BE 645310 A BE645310 A BE 645310A BE 645310 A BE645310 A BE 645310A
Authority
BE
Belgium
Prior art keywords
lenses
spherical
segments
signs
cylindrical lenses
Prior art date
Application number
BE645310A
Other languages
English (en)
French (fr)
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
Priority to BE645310A priority Critical patent/BE645310A/fr
Publication of BE645310A publication Critical patent/BE645310A/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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Lenses (AREA)
BE645310A 1963-07-05 1964-03-17 BE645310A (ref)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE645310A BE645310A (ref) 1963-07-05 1964-03-17

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE634569 1963-07-05
BE645310A BE645310A (ref) 1963-07-05 1964-03-17

Publications (1)

Publication Number Publication Date
BE645310A true BE645310A (ref) 1964-07-16

Family

ID=25655566

Family Applications (1)

Application Number Title Priority Date Filing Date
BE645310A BE645310A (ref) 1963-07-05 1964-03-17

Country Status (1)

Country Link
BE (1) BE645310A (ref)

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