Celebration of the beginning of the second century of the American patent system at Washington City, D. C., April 8, 9, 10, 1891.
Contributors: United States. Patent Office.; Gedney & Roberts.
Publisher: The Executive Committee
Published: 1892
Place of publication: Washington
Language: eng
Number of pages: 554
Subjects: Patents -- United States.
Other titles: American patent system.; Patent centennial celebration, 1891.