Browse:
See our blog post that highlights the various locations of the U.S. Patent Office:
"The Peripatetic U.S. Patent Office Locations: 1790 to Present"
A history of the Confederate Patent Office can be found in the book Confederate Invention : the Story of the Confederate States Patent Office and its Inventors by H. Jackson Knight (2011).
You might wish to also take a look at the description of NARA's records of the Patent Office.
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