A digest of patents, issued by the United States, from 1790 to January 1, 1839: published by Act of Congress under the superintendence of the Commissioner of Patents
A government reference volume compiling every U.S. patent granted from 1790 to 1839, prepared by Commissioner Henry L. Ellsworth for the Patent Office and printed by Peter Force in Washington in 1840 for inventors, lawyers, and clerks. The plates here are letterpress pages: narrow columns of inventors' names set in small roman and italic type, offering dense typographic texture, period name lists, and column rules.
