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Features

Combating Injurious Insects with the Aid of Their Natural Enemies

True Significance of the Hudson-Fulton Festival

One Hundred Years of the Marine Engine

Aeronautics

Science

Engineering

How We Get Standard Time

By Harlan T. Stetson

Corrugated System of Ship Construction

The Gabet Wirelessly-Controlled Automatic Torpedo

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

The Modern Icarus

By John Elfreth Watkins

Convenient Book Holder

Sanitary Refuse Receptacle

Rail Fastener

Patent Department

Self-Cleaning Ashpans for Locomotives

Improved Cutter Head

Departments

  • Departments

    The Heavens in October

  • Index of Inventions

  • Patents

  • Recently Patented Inventions

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October 02, 1909

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