FR671894A - Darkroom improvements to cinematographic devices - Google Patents

Darkroom improvements to cinematographic devices

Info

Publication number
FR671894A
FR671894A FR671894DA FR671894A FR 671894 A FR671894 A FR 671894A FR 671894D A FR671894D A FR 671894DA FR 671894 A FR671894 A FR 671894A
Authority
FR
France
Prior art keywords
darkroom
cinematographic
devices
cinematographic devices
darkroom improvements
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)
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.)
Bell and Howell Co
Original Assignee
Bell and Howell Co
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 Bell and Howell Co filed Critical Bell and Howell Co
Application granted granted Critical
Publication of FR671894A publication Critical patent/FR671894A/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
    • G03B19/00—Cameras
    • G03B19/18—Motion-picture cameras
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR671894D 1929-03-22 1929-03-22 Darkroom improvements to cinematographic devices Expired FR671894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR671894T 1929-03-22

Publications (1)

Publication Number Publication Date
FR671894A true FR671894A (en) 1929-12-19

Family

ID=9017213

Family Applications (1)

Application Number Title Priority Date Filing Date
FR671894D Expired FR671894A (en) 1929-03-22 1929-03-22 Darkroom improvements to cinematographic devices

Country Status (1)

Country Link
FR (1) FR671894A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969887C (en) * 1952-07-20 1958-07-24 Bauer Eugen Gmbh Spring drive film camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969887C (en) * 1952-07-20 1958-07-24 Bauer Eugen Gmbh Spring drive film camera

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