FR691854A - Device for opening the film duct in cinematographic projection devices - Google Patents

Device for opening the film duct in cinematographic projection devices

Info

Publication number
FR691854A
FR691854A FR691854DA FR691854A FR 691854 A FR691854 A FR 691854A FR 691854D A FR691854D A FR 691854DA FR 691854 A FR691854 A FR 691854A
Authority
FR
France
Prior art keywords
opening
projection devices
cinematographic projection
film duct
duct
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR691854A publication Critical patent/FR691854A/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
    • G03B1/00—Film strip handling
    • G03B1/56—Threading; Loop forming

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR691854D 1930-03-13 1930-03-13 Device for opening the film duct in cinematographic projection devices Expired FR691854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR691854T 1930-03-13

Publications (1)

Publication Number Publication Date
FR691854A true FR691854A (en) 1930-10-28

Family

ID=9035198

Family Applications (1)

Application Number Title Priority Date Filing Date
FR691854D Expired FR691854A (en) 1930-03-13 1930-03-13 Device for opening the film duct in cinematographic projection devices

Country Status (1)

Country Link
FR (1) FR691854A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431681A (en) * 1945-06-23 1947-12-02 Argus Inc Movable tension shoe
US2477624A (en) * 1946-06-14 1949-08-02 Illinois Watch Case Co Removable film gate assembly for picture projection apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431681A (en) * 1945-06-23 1947-12-02 Argus Inc Movable tension shoe
US2477624A (en) * 1946-06-14 1949-08-02 Illinois Watch Case Co Removable film gate assembly for picture projection apparatus

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