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Priority to JP1980014689UpriorityCriticalpatent/JPS631305Y2/ja
Publication of JPS56117738UpublicationCriticalpatent/JPS56117738U/ja
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Einaeugige spiegelreflexkamera mit einem im bildseitigen strahlengang des kameraobjektivs angeordneten photoelektronischen bauelement zur messung der objekthelligkeit