APA (7th ed.) Citation

White, F. N., & Kimmel, G. P. (1920). Combined Swingletree and Evener. United States. Patent Office.

Chicago Style (17th ed.) Citation

White, Floyd N., and George P. Kimmel. Combined Swingletree and Evener. United States. Patent Office, 1920.

MLA (9th ed.) Citation

White, Floyd N., and George P. Kimmel. Combined Swingletree and Evener. United States. Patent Office, 1920.

Warning: These citations may not always be 100% accurate.