35 U.S.C. 272 Temporary presence in the United States.
The use of any invention in any vessel, aircraft or vehicle of any country which affords similar privileges to vessels, aircraft, or vehicles of the United States, entering the United States temporarily or accidentally, shall not constitute infringement of any patent, if the invention is used exclusively for the needs of the vessel, aircraft, or vehicle and is not offered for sale or sold in or used for the manufacture of anything to be sold in or exported from the United States.
(Amended Dec. 8, 1994, Public Law 103-465, sec. 533(b)(4), 108 Stat. 4989.)