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Color Photography

Armour Institute

Progress of Railways in the United States

Notes from the Worlds Columbian Exposition Chicago 1893

A Kindergarten Teaching Device

A Machine for Finishing Saws

An Improved Balanced Slide Valve

A Device to Teach Spelling

A Gold and Silver Refining Establishment

Improved Circular and Elliptical Boring Machine

Experiment Showing Magnetic Lag

By M. Hopkins

Nasmyth's Torpedo Boat of 1853

Warburton Road Bridge--Manchester Ship Canal

The Century Vase at the Fair

The Santa Maria at the Fair

World's Columbian Exposition--Entrance to the Palace of Agriculture Building

A Twin Daisy


  • Departments


  • Recently Patented Inventions

  • New Books and Publications

  • Notes and Queries

  • Index of Inventions

  • Business and Personal

  • Patents

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