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Improved Mode of Lining Oil Barrels

The Strength of Cast-Iron Pillars

Smithsonian Report

Foreign Correspondence

Recent American Patents

The Foot Lathe

Report of the Chief of the Bureau of Ordnance of the Navy Department

Separating Gold by Lead

Engineering Energy in America

To Whom It May Concern

Boiler Incrustations

To Our Readers

The Rights of Joint Patentees


Preserving Timber

End of the Volume

Patent Claims

Issued From the United States Patent-Office


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December 23, 1865