Number | Name | Date | Kind |
---|---|---|---|
D386745 | Kobylarz et al. | Nov 1997 | |
3644873 | Dalton et al. | Feb 1972 | |
4515872 | Okano | May 1985 | |
4764129 | Jones et al. | Aug 1988 | |
5008864 | Yoshitake | Apr 1991 | |
5415947 | Mitsui et al. | May 1995 | |
5481506 | Kita | Jan 1996 | |
5508123 | Fan | Apr 1996 |