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An Important Telephone Patent Decision

The Slaby System of Wireless Duplex Telegraphy

The New Star in Perseus

A New Permanent Phonograph Record

The Pollok Memorial Prize

A Triumph of Ingenuity and a Patent with a History

An Improved Gasoline Automobile

San Gimignano and Its Towers

Trees and Plants of Southern California

By Charles F. Holder

The Paige Typesetting Machine

The Slaby System of Wave-Selective Wireless Duplex Telegraphy

Automatic Ore Unloader

By W. Frank M'Clure

A New Book or Copy Holder for Typewriters

A Pail for Live Bait

A Valve Motion for Small High-Pressure Pumps


  • Departments

    Business and Personal Wants - March 3, 1901

  • Recently Patented Inventions - March 9, 1901

  • Notes and Queries - March 9, 1901

  • Index of Inventions - March 9, 1901

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March 09, 1901