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.)
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Optique et Precision de Levallois SA
Original Assignee
Optique et Precision de Levallois SA
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Filing date
Publication date
Application filed by Optique et Precision de Levallois SAfiledCriticalOptique et Precision de Levallois SA
Application grantedgrantedCritical
Publication of FR1071845ApublicationCriticalpatent/FR1071845A/fr
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)
FR1071845D1952-11-101952-11-10Perfectionnement aux viseurs photographiques
ExpiredFR1071845A
(fr)