Would you please tell me the various physical locations of the USPTO throughout our history prior to Alexandria, Virginia.
See our blog post that highlights the various locations of the U.S. Patent Office:
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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