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FR543904A - Improvements to viewfinder devices for cameras - Google Patents

Improvements to viewfinder devices for cameras

Info

Publication number
FR543904A
FR543904A FR543904DA FR543904A FR 543904 A FR543904 A FR 543904A FR 543904D A FR543904D A FR 543904DA FR 543904 A FR543904 A FR 543904A
Authority
FR
France
Prior art keywords
cameras
viewfinder
devices
viewfinder 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
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.)
Baille Lemaire & Fils
Original Assignee
Baille Lemaire & Fils
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 Baille Lemaire & Fils filed Critical Baille Lemaire & Fils
Application granted granted Critical
Publication of FR543904A publication Critical patent/FR543904A/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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR543904D 1921-11-25 1921-11-25 Improvements to viewfinder devices for cameras Expired FR543904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR543904T 1921-11-25

Publications (1)

Publication Number Publication Date
FR543904A true FR543904A (en) 1922-09-12

Family

ID=8931905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR543904D Expired FR543904A (en) 1921-11-25 1921-11-25 Improvements to viewfinder devices for cameras

Country Status (1)

Country Link
FR (1) FR543904A (en)

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