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Men of Wealth as Inventors

Unjust and Ungenerous

The American Scholarships at Oxford

The Airship and the Aeroplane

Record of American Auto Shows

Science Notes

Electric Searchlight for Field Service

Railroad Train Taking Its Own Photograph

A New Variable Speed Transmission

Home-Made Device for Decorating Glass

The Mechanical Work of the Twelfth Census

By Edward W. Byrn

A Boat on Wheels

By John L. von Blon

Some Interesting Features of the Krupp Works at Essen

By Henry L. Geissel

An Insect Geometrician

By Herman Muckermann

Patent Department

The Hanson-Lee Typewriter

Business and Personal Wants


  • Departments

    Legal Notes - April 19, 1902

  • Recently Patented Inventions - April 19, 1902

  • Index of Inventions - April 19, 1902

  • Notes and Queries - April 19, 1902

  • Patents - April 19, 1902

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April 19, 1902