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Bridge Our Downtown Side Streets

Wave Action

Extermination of American Game

An Improved Stove Pipe

A Burner for Heated Compressed Air and Oils Gases etc

An Attachment for Printing Presses

An Improved Car Coupling

An Improved Clamp

The Armstrong 9-Inch Gun

Improved Gate for Railway Crossings

Bridging New York Streets

Rio De Janeiro

Mr Lorillard's Steel Launch

High and Low Tension Electric Circuits

By T. O'Conor Sloane

Paris Sewer Electric Wires and Pneumatic Tubes


  • Letters

    Correspondence- February 8, 1890

  • Departments

    Recently Patented Inventions- February 8, 1890

  • Business and Personal- February 8, 1890

  • Notes and Queries- February 8, 1890

  • Index of Inventions- February 8, 1890

  • To Inventors- February 8, 1890

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