Number | Name | Date | Kind |
---|---|---|---|
4052979 | Scherr et al. | Oct 1977 | |
4129125 | Lester et al. | Dec 1978 | |
4258719 | Lewyn | Mar 1981 | |
4295472 | Adams | Oct 1981 | |
4450843 | Barney et al. | May 1984 | |
4513753 | Tabata et al. | Apr 1985 | |
4635646 | Gilles et al. | Jan 1987 | |
4807639 | Shimizu et al. | Feb 1989 | |
5226425 | Righter | Jul 1993 | |
5289824 | Mills et al. | Mar 1994 | |
5365935 | Righter et al. | Nov 1994 |