A digest of patents, issued by the United States, from 1790 to January 1, 1839
Subtitle: published by Act of Congress under the superintendence of the Commissioner of Patents
By: Henry L. Ellsworth, to which is added the present law relating to patents
Contributors: Ellsworth, Henry Leavitt, 1791-1858
Publisher: Printed by Peter Force
Published: 1840
Place of publication: Washington, D.C
Language: eng
Number of pages: 670