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Features

Christensen's Patent Rotary Engine

The Plague or Black Death

Miscellaneous Summary

Sea Fogs and Signals

Theory and Practice

The Broadway Railroad

The Patent Office Report for 1861

Valuable Receipts

Paint for Iron Ships

Changes in the Iron-Clads

The Manufacture of Carriages

Patent Claims

Issued from the United States Patent Office

Recent American Patents

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May 23, 1863

Think Outside the Gift Box