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