1 Application for patent filed August 27, 1993. SH/dm Burns, Doane, Swecker & Mathis George Mason Building Washington and Prince Streets P.O. Box 1404 Alexandria, VA 22313-1404 1 17 1Application for patent filed August 27, 1993.Page: Previous 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17Last modified: November 3, 2007