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Movable Theater Stages

Probable Defeat of the Bad Patent Bills

Extracts from the Letter of the Hon. Benjamin Butterworth, Commissioner of Patents, to the Cincinnati Convention of Inventors

United States Patent office, Washington, March 23, 1884

Improved Refrigerator

Improved Ship Cleaner

The International Electrical Exhibition

Improved Steam Engine

The Remington Drop Hammer

Improved Steel Horse Collar

The New Dynamite Gun

Jade and Jade Objects from Central America

Engineering Inventions - April 5, 1884

Mechanical Inventions - April 5, 1884

Agricultural Inventions - April 5, 1884

Miscellaneous Inventions - April 5, 1884


  • Letters

    Correspondence - April 5, 1884

  • Recommended

    New Books and Publications - April 5, 1884

  • Departments

    Business and Personal - April 5, 1884

  • Notes and Queries - April 5, 1884

  • Index of Inventions - April 5, 1884

  • Patents

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