FR546847A - Perfectionnements aux appareils photographiques - Google Patents

Perfectionnements aux appareils photographiques

Info

Publication number
FR546847A
FR546847A FR546847DA FR546847A FR 546847 A FR546847 A FR 546847A FR 546847D A FR546847D A FR 546847DA FR 546847 A FR546847 A FR 546847A
Authority
FR
France
Prior art keywords
cameras
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
English (en)
Inventor
Marc Aurele Noel
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 FR546847A publication Critical patent/FR546847A/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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR546847D 1922-01-19 1922-01-19 Perfectionnements aux appareils photographiques Expired FR546847A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR546847T 1922-01-19

Publications (1)

Publication Number Publication Date
FR546847A true FR546847A (fr) 1922-11-24

Family

ID=8933797

Family Applications (1)

Application Number Title Priority Date Filing Date
FR546847D Expired FR546847A (fr) 1922-01-19 1922-01-19 Perfectionnements aux appareils photographiques

Country Status (1)

Country Link
FR (1) FR546847A (fr)

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