TL Singh, SK Garrison, M Carlson, K Singh… - US Patent …, 2010 - Google Patents
5,341,477 A 8, 1994 Pitkin et al. 5,459,837 A 10, 1995 Caccavale 5,521,910 A 5, 1996
Matthews 5,754,543 A 5, 1998 Seid 5,805,798 A 9, 1998 Kearn et al. 5,974,460 A 10/1999 …