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Features

Jacob's System of Wheel Manufacture

Expansion of Steam

Turning Tools

Seasoning of Lumber and Timber

Recent American Patents

Notice to Subscribers

Squire's Fruit Jar

The Ruhmkorff Coil

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

Retrospective

Professor Rankine on Expansion

Oil Stock Excitement

Patent Claims

Prof. Doremus's Lectures

Porter's Sifter Shovel

Departments

  • Departments

    Notes and Queries

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