Classified index of subjects of invention adopted in the U. S. Patent office, March 1, 1872.
Publisher: Scholarly Publishing Office, University of Michigan Library
Published: December 20, 2005
Language: eng
Format: Paperback
Number of pages: 330
ISBN-13: 9781425533083
Subjects: American history; History; History - U.S.; History: American; USA; United States - General; History / United States / General