APA (7th ed.) Citation

United States. Patent Office. (1934). The official gazette of the United States Patent Office, Feb. 20, 1934. [s.n.].

Chicago Style (17th ed.) Citation

United States. Patent Office. The Official Gazette of the United States Patent Office, Feb. 20, 1934. [Washington]: [s.n.], 1934.

MLA (9th ed.) Citation

United States. Patent Office. The Official Gazette of the United States Patent Office, Feb. 20, 1934. [s.n.], 1934.