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Features

A Storage Battery for Central Station Service

Death by Gas Asphyxiation and Poisoning

A Movable Elevator for Use on Store Floors

The “Paragon” Projection Lantern

An Improved Propeller Sleigh

An Improved Rotary Engine

The Rand Drill Company's Compound Duplex Air Compressor and Rock Drills at the Columbian Exposition

Magnetic Jack Straws

The Scientific American Match Safe

Brooks' Comet of 1893

Movable Night Lamp for Stairways

The New Dudley Observatory, in Albany

The World's Columbian Exposition--The Indian Scout

Noriega's Telephone

Sheffield Steel at the Exposition

The Flying Propeller

To Inventors

Departments

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  • Recently Patented Inventions

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  • Notes and Queries

  • Index of Inventions

  • Patents

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November 18, 1893

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