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Features

The Pedespeed, Improved Fan Blower

Visit to a Steel Manufactory

An Interesting Review of the American Patent System

By Samuel A. Duncan

Products of the Pine Forest

By Henry E. Colton

Snyder's Improved Turbine Wheel

Woods' Saw-Gumming and Sharpening Machine

Co-Operation among Inventors

The Use of Salt in Agriculture

Something about Gases

Proposed Sale of the Yosemite Valley

Congress Extending Patents

Proposed Plan for Publishing Patent Office Specifications and Drawings

New Mechanical Movements

Applications for Extension of Patents- March 19, 1870

Recent American and Foreign Patents- March 19, 1870

Official List of Patents- March 19, 1870

Progress of American Invention in Europe- March 19, 1870

Rotating and Fixed Turrets

Departments

  • Letters

    Correspondence- March 19, 1870

  • Answers to Correspondents- March 19, 1870

  • Recommended

    New Books and Publications- March 19, 1870

  • Departments

    Business and Personal- March 19, 1870

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March 19, 1870

Think Outside the Gift Box