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FR542509A - Improvements to projection devices for cinematographic views - Google Patents

Improvements to projection devices for cinematographic views

Info

Publication number
FR542509A
FR542509A FR542509DA FR542509A FR 542509 A FR542509 A FR 542509A FR 542509D A FR542509D A FR 542509DA FR 542509 A FR542509 A FR 542509A
Authority
FR
France
Prior art keywords
projection devices
cinematographic
views
cinematographic views
projection
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
John Dallas Law
William Francis James
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 FR542509A publication Critical patent/FR542509A/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
    • G03B21/14—Details
    • G03B21/18—Fire preventing or extinguishing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR542509D 1921-10-19 1921-10-19 Improvements to projection devices for cinematographic views Expired FR542509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR542509T 1921-10-19

Publications (1)

Publication Number Publication Date
FR542509A true FR542509A (en) 1922-08-16

Family

ID=8930927

Family Applications (1)

Application Number Title Priority Date Filing Date
FR542509D Expired FR542509A (en) 1921-10-19 1921-10-19 Improvements to projection devices for cinematographic views

Country Status (1)

Country Link
FR (1) FR542509A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6126027A (en) * 1995-02-21 2000-10-03 Mcg Closures Limited Self-centering container closure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6126027A (en) * 1995-02-21 2000-10-03 Mcg Closures Limited Self-centering container closure

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