FA Ware, L Lai, CA Bellows, WS Richardson - US Patent 7,280,428, 2007 - Google Patents
4,670,745 A 6/1987 O'Malley et al. 5,751,657 A 5, 1998 Hotta 4,698,788 A 10/1987
Flannagan et al. 5,787,267 A 7/1998 Leung et al. 4,700,328 A 10/1987 Burghard 5,793,998 …