United States. Patent Office. (1922). [Patent Office, 1922]. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Patent Office. [Patent Office, 1922]. Washington: [s.n.], 1922.
MLA (8th ed.) CitationUnited States. Patent Office. [Patent Office, 1922]. [s.n.], 1922.
Warning: These citations may not always be 100% accurate.