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US1530178A
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Film-feed mechanism for cinematographs
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DE414703C
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Maltese lock with driving pin circling in an epicycloidal curve for feeding picture tape to motion picture devices
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US1541218A
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Cinematographic apparatus
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US1475013A
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Cinematographic apparatus
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GB170749A
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Improvements in or relating to kinematograph apparatus
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GB174655A
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Improvements in or relating to alternating current electric motors
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DE351854C
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Cinematograph with optical compensation for image migration
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Apparatus for cinematographic projection
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GB165487A
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Improvements in or relating to kinematographic projection apparatus
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DE333783C
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Electromagnetic movement device acting as an alternating current motor with one or more pole shields between the pole pieces
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GB165114A
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Improvements in or relating to apparatus for cinematographic projection
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CA214291A
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Moving picture apparatus
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DE367578C
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Cinematograph with optical compensation for image migration
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