APA

United States, . (2001). Index of patents issued from the United States Patent and Trademark Office and the consolidated listing of official gazette notices. Washington, D.C: U.S. Patent & Trademark Office, OCIO, Information Products Division.

Chicago

United States, . 2001. Index of patents issued from the United States Patent and Trademark Office and the consolidated listing of official gazette notices. Washington, D.C: U.S. Patent & Trademark Office, OCIO, Information Products Division.

Harvard

United States, . (2001). Index of patents issued from the United States Patent and Trademark Office and the consolidated listing of official gazette notices. Washington, D.C: U.S. Patent & Trademark Office, OCIO, Information Products Division.

MLA

United States, . Index of patents issued from the United States Patent and Trademark Office and the consolidated listing of official gazette notices. Washington, D.C: U.S. Patent & Trademark Office, OCIO, Information Products Division. 2001.