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Patent:GB211623


Patent:GB 211623
Title:Improvements in devices for determining stop or diaphragm opening and or the focus, minimum distance and maximum distance of range in photographic cameras
Date:28.02.1924
Place:Stockholm
Country:Great Britain
Person:Anders Josef Ostlind, Karl Gustav Hagstrom
Company:
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 GB211623


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Aus der Patentschrift GB211623