Subject-matter index of patents for inventions issued by the United States Patent office from 1790 to 1873, inclusive ...

Notes:
3 v. 28 cm.
Data Provider:
University of Michigan. Libraries
Collection:
Washington,: Govt. print. off., and Ann Arbor, Michigan: University of Michigan Library
Subject Topic:
Patents -- United States
Language:
eng
Rights:
http://quod.lib.umich.edu/t/text/accesspolicy.html
URL:
http://name.umdl.umich.edu/AGL4739.0002.001