Below are some basic examples of how to cite patents in bibliographies. For more detailed information or for other styles, consult a style manual. Citation tools like EndNote will produce formatted citations for patents, but make sure to review them for accuracy before adding them to your Works Cited page.
Wright, W..; Wright, O. Flying-Machine. U.S. Patent 821,393, May 22, 1906.
Wright, W., & Wright, O. (1906). US Patent No 821,393. Washington, DC: U.S. Patent and Trademark Office.
Wright W, Wright O, inventors; Wright W, Wright O, assignees. 1906 May 22. Flying-Machine. United States patent US 821,393.
 W. Wright and O. Wright, "Flying-Machine," U.S. Patent 821 393, May 22, 1906.
Wright, Wilbur, and Orville Wright. Flying Machine. Patent 821,393. 22 May 1906.