FR826670A - Production process for projection surfaces - Google Patents

Production process for projection surfaces

Info

Publication number: FR826670A
Authority: FR; France
Prior art keywords: production process; projection surfaces; projection; production
Prior art date: 1936-09-17
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

Gustav Kogel

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.)

1936-09-17

Filing date

1937-09-14

Publication date

1938-04-06

1937-09-14 Application filed filed Critical

1938-04-06 Application granted granted Critical

1938-04-06 Publication of FR826670A publication Critical patent/FR826670A/en

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

Landscapes

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

FR826670D 1936-09-17 1937-09-14 Production process for projection surfaces Expired FR826670A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE826670X		1936-09-17

Publications (1)

Publication Number	Publication Date
FR826670A true FR826670A (en)	1938-04-06

Family

ID=6747829

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR826670D Expired FR826670A (en)	1936-09-17	1937-09-14	Production process for projection surfaces

Country Status (1)

Country	Link
FR (1)	FR826670A (en)

1937
- 1937-09-14 FR FR826670D patent/FR826670A/en not_active Expired

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