US1843265A
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Photographic shutter
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GB361252A
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Retarding mechanism for photographic shutters
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GB361251A
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Photographic shutters
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GB363868A
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Photographic shutter
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US1856308A
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Photographic shutter
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GB365753A
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Photographic shutter of the pivoted blade, symmetrical opening type
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US1828215A
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Photographic shutter
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GB353282A
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Shutters of the pivoted blade symmetrical opening type for photographic objectives
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GB353723A
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Shutters of the pivoted blade symmetrical opening type for photographic objectives
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US1861257A
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Photographic shutter
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GB351792A
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Improvements in or relating to actuating mechanism for photographic shutters
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US1861256A
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Photographic shutter
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GB329894A
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Photographic shutters
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US1865078A
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Photographic shutter
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GB315707A
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Photographic shutters
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US1487193A
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Starter for internal-combustion engines
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US1476322A
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Electric starter for internal-combustion engines
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