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Features

The Armour Institute, Chicago

The Value of a Patent

The World's Congress Auxiliary

Crank Shaping Machine

The Bicycle Industry

By Ben Bolder

An Improved Mine Car

An Improved Motor

An Improved Crude Oil Burner

A Hat Support for Miners' Lamps

An Improved Book or Copy Holder

A Novel Motor

The Universal Scale

The New Coast Defense War Ship Terror

Recreations in Photography

An Improved Traction Engine

Progress of the Cruiser Maine

The Utilization of Old Tin Cans

Departments

  • Letters

    Correspondence- March 24, 1893

  • Recommended

    New Books and Publications- March 24, 1893

  • Departments

    Recently Patented Inventions- March 24, 1893

  • Business and Personal- March 24, 1893

  • Notes and Queries- March 24, 1893

  • To Inventors- March 24, 1893

  • Index of Inventions- March 24, 1893

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March 25, 1893

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