human: How can an applicant obtain copies of cited U.S. patent references if they do not have access to the Internet?
assistant: If an applicant or a practitioner chooses not to print copies of U.S. patents and patent applications publications through the USPTO Patents on the Web system or through the E-Patent Reference system, commercial sources that provide patents very quickly and inexpensively are available, and copies of U.S. patents and patent application publications are also available at the Patent and Trademark Depository Libraries (PTDLs). A listing of PTDLs is located on the USPTO web site athttp://www.uspto.gov/web/offices/ac/ido/ptdl/ptdlib_1.html . Additionally, the cost of patents if ordered from the USPTO Office of Public Records is very reasonable ($3). For more information, see "USPTO to Provide Electronic Access to Cited U.S. Patent References with Office Actions and Cease Supplying Paper Copies," 1282 OG 109 (May 18, 2004).http://www.uspto.gov/web/offices/com/sol/og/2004/week20/pataces.htm .