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Improved Patent Bridge, Window Glass


Pittsburgh Petroleum Trade

Swindling by Machinery

Applications for the Extension of Patents

Miscellaneous Summary

The Wonders of the Animal Kingdom

The *ldquo;Autophoneon”

A Chance for the Ingenious

Christy's Patent Sad-Iron

A Grand Continental Railroad

Is Your Boiler Safe?

What Can Be Done for Inventors--Advice Gratis and Advice for Pay

Breech-Loading Versus Muzzle-Loading Guns

Sorghum Cane and Sugar

Patent Claims

American Inventions Abroad

Recent American Patents

To Our Readers

Machinery Versus Muscle


  • Departments


  • Notes and Queries

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