Number | Name | Date | Kind |
---|---|---|---|
D187091 | Boothroyd et al. | Jan 1960 | |
D312120 | Askew | Nov 1990 | |
3194257 | Stephens | Jul 1965 | |
3688797 | Sorenson | Sep 1972 | |
4815496 | Nishitani et al. | Mar 1989 | |
4860638 | Hosono et al. | Aug 1989 |
Number | Date | Country |
---|---|---|
2826480 | Jan 1979 | DEX |