ISBN 1361887087 books & textbook
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
Ellsworth, Henry Leavitt 1791-1858 United States Patent Office
Wentworth Press /2016-08-25 Paperback / 700 Pages
isbn-10: 1361887087 / isbn-13: 9781361887080
