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Improved Patent Projectiles

The Waterbury Brass Mills

Valuable Receipts

History of Aniline Colors

The Wonders of the Skin

Malleable Iron and Steel from Pig Iron

A Pneumatic Post

Intellectual Tools

Death of Benjamin Pike, Sen

The Iron-Clads at Fort Sumter

Patent Claims

Issued from the United States Patent Office

Recent American Patents


  • Departments


  • Notes and Queries

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