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    Features

    The Manufacture of Photographic Apparatus

    Problems in Economics

    Summer Study for City Children

    A Carriage and Wagon Brake

    An Improved Window Shade

    A Hand Crimping Tool

    A Swinging Seat for Agricultural Implements

    An Automatic Life Guard for Cars

    The Electrical Conduit System in New York City

    Electric Light Plant Steamer Bay State

    Automobile Carriages

    The North Sea Ship Canal

    Departments

    • Letters

      Correspondence - July 20, 1895

    • Recommended

      New Books and Publications - July 20, 1895

    • Departments

      Recently Patented Inventions - July 20, 1895

    • Business and Personal - July 20, 1895

    • To Inventors - July 20, 1895

    • Index of Inventions - July 20, 1895

    • Notes and Queries - July 20, 1895

    • Patents - July 20, 1895

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    July 20, 1895