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Features

True Significance of the Hudson-Fulton Festival

Combating Injurious Insects with the Aid of Their Natural Enemies

One Hundred Years of the Marine Engine

Aeronautics

Engineering

Science

How We Get Standard Time

By Harlan T. Stetson

The Gabet Wirelessly-Controlled Automatic Torpedo

Corrugated System of Ship Construction

"The Zeppelin III." Airship and Its Trip to Berlin

The Modern Icarus

By John Elfreth Watkins

Rail Fastener

Convenient Book Holder

Patent Department

Self-Cleaning Ashpans for Locomotives

Sanitary Refuse Receptacle

Improved Cutter Head

Departments

  • Departments

    The Heavens in October

  • Recently Patented Inventions

  • Index of Inventions

  • Patents

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