FR428252A - Improvements to cinematographs - Google Patents

Improvements to cinematographs

Info

Publication number: FR428252A
Authority: FR; France
Prior art keywords: cinematographs
Prior art date: 1911-03-04
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

Thomas Percy Middleton

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.)

Individual

Original Assignee

Individual

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.)

1911-03-04

Filing date

1911-03-04

Publication date

1911-08-26

1911-03-04 Application filed by Individual filed Critical Individual

1911-08-26 Application granted granted Critical

1911-08-26 Publication of FR428252A publication Critical patent/FR428252A/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
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
- G03B21/40—Eliminating or reducing effect of flicker

Landscapes

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

FR428252D 1911-03-04 1911-03-04 Improvements to cinematographs Expired FR428252A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR428252T		1911-03-04

Publications (1)

Publication Number	Publication Date
FR428252A true FR428252A (en)	1911-08-26

Family

ID=1470660

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR428252D Expired FR428252A (en)	1911-03-04	1911-03-04	Improvements to cinematographs

Country Status (1)

Country	Link
FR (1)	FR428252A (en)

1911
- 1911-03-04 FR FR428252D patent/FR428252A/en not_active Expired

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