title | ISBN-13 (ISBN-10) | year of publication |
---|---|---|
The Democratization of Invention: Patents and Copyrights in American Economic Development, 1790-1920 | 978-0-521-74720-2 (0-521-74720-1) | 2013 |
The Democratization of Invention: Patents and Copyrights in American Economic Development, 1790–1920 | 978-0-521-81135-4 (0-521-81135-X) | 2005 |