FR25870E - New device for obtaining relief in cinematographic projections - Google Patents

New device for obtaining relief in cinematographic projections

Info

Publication number
FR25870E
FR25870E FR25870DA FR25870E FR 25870 E FR25870 E FR 25870E FR 25870D A FR25870D A FR 25870DA FR 25870 E FR25870 E FR 25870E
Authority
FR
France
Prior art keywords
new device
obtaining relief
cinematographic
projections
cinematographic projections
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
Cesare Parolini
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 FR25870E publication Critical patent/FR25870E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR25870D 1921-12-23 1921-12-23 New device for obtaining relief in cinematographic projections Expired FR25870E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR25870T 1921-12-23

Publications (1)

Publication Number Publication Date
FR25870E true FR25870E (en) 1923-06-22

Family

ID=8664348

Family Applications (1)

Application Number Title Priority Date Filing Date
FR25870D Expired FR25870E (en) 1921-12-23 1921-12-23 New device for obtaining relief in cinematographic projections

Country Status (1)

Country Link
FR (1) FR25870E (en)

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