FR933643A - Improvements to cinematographic projection devices - Google Patents

Improvements to cinematographic projection devices

Info

Publication number
FR933643A
FR933643A FR933643DA FR933643A FR 933643 A FR933643 A FR 933643A FR 933643D A FR933643D A FR 933643DA FR 933643 A FR933643 A FR 933643A
Authority
FR
France
Prior art keywords
projection devices
cinematographic projection
cinematographic
devices
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
Franz F Ehrenhaft
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 FR933643A publication Critical patent/FR933643A/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
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
FR933643D 1945-09-14 1946-09-14 Improvements to cinematographic projection devices Expired FR933643A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US933643XA 1945-09-14 1945-09-14

Publications (1)

Publication Number Publication Date
FR933643A true FR933643A (en) 1948-04-27

Family

ID=22238507

Family Applications (1)

Application Number Title Priority Date Filing Date
FR933643D Expired FR933643A (en) 1945-09-14 1946-09-14 Improvements to cinematographic projection devices

Country Status (2)

Country Link
DE (1) DE849954C (en)
FR (1) FR933643A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1245165B (en) * 1958-12-11 1967-07-20 Kalart Co Inc Projector with projector part and sound part for reproducing a sequence of still images with associated sound recordings

Also Published As

Publication number Publication date
DE849954C (en) 1952-09-18

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