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Publication of FR920744ApublicationCriticalpatent/FR920744A/fr
G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
G02B23/14—Viewfinders
Landscapes
Physics & Mathematics
(AREA)
Astronomy & Astrophysics
(AREA)
General Physics & Mathematics
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Optics & Photonics
(AREA)
FR920744D1946-01-281946-01-28Dispositif de contrôle de l'image d'appareil photographique ou cinématographique réflexe
ExpiredFR920744A
(fr)