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MAURICE GUILLAMAUD
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MAURICE GUILLAMAUD
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Application filed by MAURICE GUILLAMAUDfiledCriticalMAURICE GUILLAMAUD
Application grantedgrantedCritical
Publication of FR397103ApublicationCriticalpatent/FR397103A/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
G03B13/18—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)
FR397103D1907-12-061908-12-05Viseur-télémètre pour appareils photographiques
ExpiredFR397103A
(fr)