Não informado. (1971). Official Gazette of the United States Patent and Trademark Office. U.S. Department of Commerce.
Cita Chicago Style (17a ed.)Não informado. Official Gazette of the United States Patent and Trademark Office. Washington: U.S. Department of Commerce, 1971.
Cita MLA (8a ed.)Não informado. Official Gazette of the United States Patent and Trademark Office. U.S. Department of Commerce, 1971.
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