FR517096A - Perfectionnements aux appareils de projection - Google Patents

Perfectionnements aux appareils de projection

Info

Publication number
FR517096A
FR517096A FR517096A FR517096DA FR517096A FR 517096 A FR517096 A FR 517096A FR 517096 A FR517096 A FR 517096A FR 517096D A FR517096D A FR 517096DA FR 517096 A FR517096 A FR 517096A
Authority
FR
France
Prior art keywords
projection devices
projection
devices
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
FR517096A
Other languages
English (en)
Inventor
Erik William Nelson
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 FR517096A publication Critical patent/FR517096A/fr
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR517096A 1919-01-13 1920-06-12 Perfectionnements aux appareils de projection Expired FR517096A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517096XA 1919-01-13 1919-01-13

Publications (1)

Publication Number Publication Date
FR517096A true FR517096A (fr) 1921-04-29

Family

ID=21972894

Family Applications (1)

Application Number Title Priority Date Filing Date
FR517096A Expired FR517096A (fr) 1919-01-13 1920-06-12 Perfectionnements aux appareils de projection

Country Status (1)

Country Link
FR (1) FR517096A (fr)

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