United States, and Henry Leavitt Ellsworth. 1840. A digest of patents, issued by the United States, from 1790 to January 1, 1839. Washington: Printed by Peter Force.
Details
Title: A Digest of Patents
Creator: United States, and Henry Leavitt Ellsworth
Date Created: 1840
Subject Keywords: Patents, Inventions
Rights: This is a government work and in the public domain.
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