J Swartz, M Slutsky, S Bard, SJ Shellhammer… - US Patent …, 2005 - Google Patents
4,387,297 A 6/1983 Swartz et al. 5,014,046 A 5/1991 Minami 4409470 A 10/1983 Shepard
et al. 5,105,067 A 4/1992 Brekkestran et al. 4.460. 120 A 7/1984 Shepard et al. 5,144,120 A …