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The Hudson River Tunnel

Government Contracts Undesirable

Elias Loomis

An Improved Game Apparatus

An Improved Governor

An Improved Window Ventilator

An Automatic Ash Sifter

An Improved Astronomical Mirror

An Improved Elevator Alarm

The Boynton Bicycle Engine

The Paris Exhibition


  • Departments

    Notes and Queries- September 7, 1889

  • Recently Patented Inventions- September 7, 1889

  • Business and Personal- September 7, 1889

  • Index of Inventions- September 7, 1889

  • To Inventors- September 7, 1889

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