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A New Steam Tiller

How Our Patent Laws Promote and Improve American Industries


Peter Cooper as an Inventor

Spain a Field for Machinery and Patents

A New Ironing Table

Recent American Patents - March 29, 1879

Curious Facts in Magnetism

A New Ore Crusher

A Novel Engine Regulator

Remedy for the New Carpet Beetle

New Stencil Pen

The Writing Telegraph


Cowper's Writing Telegraph

An Improved Door Bolt

Improved Furnace for Burning Garbage

An Ancient Greek Vase

New Agricultural Inventions

Glass Sponges

Communications Received - March 29, 1879

To Inventors - March 29, 1879


  • Departments

    Correspondence - March 29, 1879

  • Business and Personal - March 29, 1879

  • Index of Inventions - March 29, 1879

  • Notes and Queries - March 29, 1879

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March 29, 1879

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