BE720350A - - Google Patents

Info

Publication number
BE720350A
BE720350A BE720350DA BE720350A BE 720350 A BE720350 A BE 720350A BE 720350D A BE720350D A BE 720350DA BE 720350 A BE720350 A BE 720350A
Authority
BE
Belgium
Application number
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
Publication of BE720350A publication Critical patent/BE720350A/xx

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/10Projectors with built-in or built-on screen
    • G03B21/11Projectors with built-in or built-on screen for microfilm reading

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
BE720350D 1967-10-25 1968-09-03 BE720350A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6714461A NL6714461A (de) 1967-10-25 1967-10-25

Publications (1)

Publication Number Publication Date
BE720350A true BE720350A (de) 1969-02-17

Family

ID=19801552

Family Applications (1)

Application Number Title Priority Date Filing Date
BE720350D BE720350A (de) 1967-10-25 1968-09-03

Country Status (4)

Country Link
BE (1) BE720350A (de)
CH (1) CH489032A (de)
FR (1) FR1595615A (de)
NL (1) NL6714461A (de)

Also Published As

Publication number Publication date
NL6714461A (de) 1969-04-29
FR1595615A (de) 1970-06-15
CH489032A (de) 1970-04-15

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