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Features

New Acoustic Apparatus

By Geo. M. Hopkins

Gary's Alleged Neutral Line

Labor and the Cost of Living

Dangers of Lead Poisoning from the Use of Tinned Ware

Miss Hosmer's Motor

Heinrich Geissler

The Neutral Line.--A Note from Mr. Gary

The Security of the East River Bridge

A Contrast between American and English Artisans

The Herreshoff Torpedo Launch

An Improved Lawn Mower

A New Shipping Tag

Some Recent American Patents

Western Iowa Coal Fields

An Improved Press

The Bobac

New Automatic Siphon

Miscellaneous Inventions

Supreme Court Decision

Ownership of the Second Term of an Extended Patent

De Kay's Snake

By C. Few Seiss

An Improved Washing Machine

To Inventors

Communications Received

Departments

  • Departments

    Business and Personal

  • Notes and Queries

  • Index of Inventions

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