Não informado. (1971). Official Gazette of the United States Patent and Trademark Office. U.S. Department of Commerce.
Chicago Style (17th ed.) CitationNão informado. Official Gazette of the United States Patent and Trademark Office. Washington: U.S. Department of Commerce, 1971.
MLA (8th ed.) CitationNão informado. Official Gazette of the United States Patent and Trademark Office. U.S. Department of Commerce, 1971.
Warning: These citations may not always be 100% accurate.