United States. Patent Office & Leggett, M. D. (1976). Subject-matter index of patents for inventions issued by the United States Patent Office from 1790 to 1873, inclusive. Arno Press.
Chicago Style (17th ed.) CitationUnited States. Patent Office and Mortimer Dormer Leggett. Subject-matter Index of Patents for Inventions Issued by the United States Patent Office from 1790 to 1873, Inclusive. New York: Arno Press, 1976.
MLA (9th ed.) CitationUnited States. Patent Office and Mortimer Dormer Leggett. Subject-matter Index of Patents for Inventions Issued by the United States Patent Office from 1790 to 1873, Inclusive. Arno Press, 1976.
Warning: These citations may not always be 100% accurate.