FR819954A - Perfectionnements aux écrans pour le cinématographe, etc. - Google Patents

Perfectionnements aux écrans pour le cinématographe, etc.

Info

Publication number: FR819954A
Authority: FR; France
Prior art keywords: cinematography; screens
Prior art date: 1937-03-30
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

Inventor

Eudaldo Soler Bofill

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.)

1937-03-30

Filing date

1937-03-30

Publication date

1937-10-29

1937-03-30 Application filed filed Critical

1937-10-29 Application granted granted Critical

1937-10-29 Publication of FR819954A publication Critical patent/FR819954A/fr

Status Expired legal-status Critical Current

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
- G03B21/606—Projection screens characterised by the nature of the surface for relief projection

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)

FR819954D 1937-03-30 1937-03-30 Perfectionnements aux écrans pour le cinématographe, etc. Expired FR819954A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR819954T		1937-03-30

Publications (1)

Publication Number	Publication Date
FR819954A true FR819954A (fr)	1937-10-29

Family

ID=9269662

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR819954D Expired FR819954A (fr)	1937-03-30	1937-03-30	Perfectionnements aux écrans pour le cinématographe, etc.

Country Status (1)

Country	Link
FR (1)	FR819954A (fr)

1937
- 1937-03-30 FR FR819954D patent/FR819954A/fr not_active Expired

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