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American Industries.--No. 47

The Manufacture of Dynamo-Electric Machines and Electric Lamps

The Proportion of Patents to Population

Cyprien M. Tessie Du Motay

A New Plan for Small Remittances

The American Society of Civil Engineers

The Army Worm

Mechanical Inventions

Hydraulic Elevator for Canal Boats

Improved Stylographic Pen

Price Indicator for Gas Meters

Ventilation of Boots and Shoes

Improved Steam Boiler

Engineering Inventions

Miscellaneous Inventions

Improved Brick Machine

New Thermo-Electric Battery

By M. A. Niaudet

The Carp and its Culture

Recent Decisions Relating to Patents

U. S. Circuit Court--Southern District of New York


  • Departments


  • Business and Personal

  • Notes and Queries

  • New Books and Publications

  • Index of Inventions

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