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Features

Improved Paper-Cutting Machine

Variations in the Boiling Point

Farmers' Club

Clark's Window-Sash Lock

Vandewater's Turbine Water Wheel

Polytechnic Association of the American Institute

Drill Chucks

The Effects of the War Upon the Industrial Arts

Crediting Extracts

The Suez Canal

Patent Claims

Issued from the United States Patent-Office

Market for the Month

Recent American Patents

Miscellaneous Summary

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    Correspondence

  • Patents

  • Notes and Queries

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