The Commissioner of Patents and Trademarks received an application for a patent for a new and useful invention. The requirements of law have been complied with, and it has been determined that a patent on the invention shall be granted under the law.

Therefore, the following U.S. Patents exist:

No. 4,874,445, dated October 17, 1989

No. 4,952,424, dated August 28, 1990

Granted to Gas Tank Renu - USA having title to these patents the right to exclude others from making, using or selling the invention throughout the United States of America for a term of seventeen years from the date of this patent, subject to the payment of maintenance fees as provided by law.