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Cotton Chopper

Description: Patent for cotton chopper
Date: November 27, 1915
Creator: Van, Benjamin
Partner: UNT Libraries Government Documents Department

Apparatus for Projecting Motion-Pictures.

Description: Patent for an improvement to motion picture projectors that lowers the operating speed, thus reducing the amount of film needed for movies, and eliminates flickers in the projection. This patent includes instructions and illustrations.
Date: November 27, 1917
Creator: Craig, Richard M.
Partner: UNT Libraries Government Documents Department
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