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The Annual Report of the Commissioner of Patents for the Year 1893

Prevention Better than Cure

A Heating Gas Burner

The Baltimore Traction Company

An Improved Wrench

Friedburg's Bunsen Burner

Reid's "Lightning" Brace

Steam Tramcars with Serpollet's Boiler

Improved Journal Box Supports


Substitute for Pipe Tongs

A Practical Steam Stamp Mill

Very High Windmill

Manufacture of Smoking Tobacco

To Inventors - April 7, 1894


  • Letters

    Correspondence - April 7, 1894

  • Recommended

    New Books and Publications - April 7, 1894

  • Departments

    Recently Patented Inventions - April 7, 1894

  • Notes and Queries - April 7, 1894

  • Index of Inventions - April 7, 1894

  • Business and Personal - April 7, 1894

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