FR811936A - Perfectionnements aux projecteurs - Google Patents

Perfectionnements aux projecteurs

Info

Publication number: FR811936A
Authority: FR; France
Prior art keywords: refinements; projector; projector refinements
Prior art date: 1935-10-21
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

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Compagnie Francaise Thomson Houston SA

Original Assignee

Compagnie Francaise Thomson Houston SA

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.)

1935-10-21

Filing date

1936-10-20

Publication date

1937-04-26

1936-10-20 Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA

1937-04-26 Application granted granted Critical

1937-04-26 Publication of FR811936A publication Critical patent/FR811936A/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
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating

Landscapes

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

FR811936D 1935-10-21 1936-10-20 Perfectionnements aux projecteurs Expired FR811936A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB811936X		1935-10-21

Publications (1)

Publication Number	Publication Date
FR811936A true FR811936A (fr)	1937-04-26

Family

ID=10522752

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR811936D Expired FR811936A (fr)	1935-10-21	1936-10-20	Perfectionnements aux projecteurs

Country Status (1)

Country	Link
FR (1)	FR811936A (fr)

1936
- 1936-10-20 FR FR811936D patent/FR811936A/fr not_active Expired

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