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Features

Application of Electricity to Tunneling

The Nullification of the Patent Laws

A Blow at the Industries of Indiana

Magnetism in Cities

Working Cold Wrought Iron

Restoration of American Shipbuilding

Blotter

Process of and Apparatus for Blocking Ice

Improved Double Mould Board Plow

Engine Lubricator

Hose Reel

The Strength of Lead Pipes

Soemmering's Electric Telegraph

The Chimpanzee and Koolokamba

Nut Lock

Insurance - January 19, 1884

Aetna Insurance Company of Hartford

Agricultural Inventions - January 19, 1884

Engineering Inventions - January 19, 1884

Mechanical Inventions - January 19, 1884

Miscellaneous Inventions - January 19, 1884

Departments

  • Letters

    Correspondence - January 19, 1884

  • Departments

    Business and Personal - January 19, 1884

  • Notes and Queries - January 19, 1884

  • Index of Inventions - January 19, 1884

  • Patents

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January 19, 1884

Help Us Reforest the Mississippi River Valley