United States patent law sesquicentennial celebration.
A record of the proceedings commemorating the one hundred and fiftieth anniversary of the signing of the first United States patent law, 1790, April ten, 1940.
[Washington, U. S. Govt. print. off., 1941]
Patent laws and legislation
Patent laws and legislation /
Patents > Patents / United States > Patents / United States / History.
Letter of transmittal signed: Conway P. Coe, commissioner.
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