Não informado. (1872). Official Gazette of the United States Patent Office. U.S. Patent Office, Department of Congress.
Chicago-viite (17. p.)Não informado. Official Gazette of the United States Patent Office. Washington: U.S. Patent Office, Department of Congress, 1872.
MLA-viite (8. p.)Não informado. Official Gazette of the United States Patent Office. U.S. Patent Office, Department of Congress, 1872.
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