Number | Name | Date | Kind |
---|---|---|---|
D222312 | Kurtz et al. | Oct 1971 | |
D245372 | Kurtz et al. | Aug 1977 | |
3783870 | Schachet | Jan 1974 | |
3847152 | Schachet | Nov 1974 | |
4018224 | Kurtz et al. | Apr 1977 | |
4105031 | Kurtz et al. | Aug 1978 |
Number | Date | Country | |
---|---|---|---|
Parent | 810579 | Jun 1977 |