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Features

The Hackensack Water Company

The Grounding of the Neutral Wise in the Three-Wire System

Position of the Planets in April

An Improved Wool Drying Machine

Twelve-Wheeled Freight Locomotives

An Improved Elevated Railway

An Improved Feed Water Heater

Photographic Notes

An Automatic Pump Regulator

An Improved Cigar Measure

A Draw Shell Lime Kiln

Charles J. Van Depoele

To Inventors

Departments

  • Letters

    Correspondence- April 2, 1892

  • Departments

    Recently Patented Inventions- April 2, 1892

  • Index of Inventions- April 2, 1892

  • Notes and Queries- April 2, 1892

  • Business and Personal- April 2, 1892

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