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Electro-Pneumatic Block Signal System

Soda Ash

Low Water Alarm and Flue Cleaning Device for Steam Boilers

An Improved Means of Channel Protection

An Improved Alarm Lock

The Victor Safety Bicycle

A Nut and Washer for Vehicle Axles

An Improved End Gate for Wagons

An Improved Key Fastener

An Improved Atomizer

A Portable Lemonade Holder and Glass Washer

Mountains of the Moon

An Improved Bridge Flooring

An Improved Camera

Queen's New Triple Plate Toepler-Holtz Machine

Automatic Recording Signal for Railroads

To Inventors- April 5, 1890


  • Letters

    Correspondence- April 5, 1890

  • Recommended

    New Books and Publications- April 5, 1890

  • Departments

    Notes & Queries- April 5, 1890

  • Business and Personal- April 5, 1890

  • Recently Patented Inventions- April 5, 1890

  • Index of Inventions- April 5, 1890

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April 05, 1890

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