FR432915A - Improvements to cinematographic projection rooms - Google Patents

Improvements to cinematographic projection rooms

Info

Publication number
FR432915A
FR432915A FR432915DA FR432915A FR 432915 A FR432915 A FR 432915A FR 432915D A FR432915D A FR 432915DA FR 432915 A FR432915 A FR 432915A
Authority
FR
France
Prior art keywords
cinematographic projection
projection rooms
rooms
cinematographic
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
Sigmund Adler
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR432915A publication Critical patent/FR432915A/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)
FR432915D 1911-07-03 1911-07-03 Improvements to cinematographic projection rooms Expired FR432915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR432915T 1911-07-03

Publications (1)

Publication Number Publication Date
FR432915A true FR432915A (en) 1911-12-20

Family

ID=1474962

Family Applications (1)

Application Number Title Priority Date Filing Date
FR432915D Expired FR432915A (en) 1911-07-03 1911-07-03 Improvements to cinematographic projection rooms

Country Status (1)

Country Link
FR (1) FR432915A (en)

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