Number | Date | Country | Kind |
---|---|---|---|
2901334 | Jan 1979 | DEX | |
2927123 | Jul 1979 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3933908 | Wellinga et al. | Jan 1976 | |
3992553 | Sirrenberg et al. | Nov 1976 | |
4005223 | Sirrenberg et al. | Jan 1977 | |
4041177 | Sirrenberg et al. | Aug 1977 | |
4068002 | Sirrenberg et al. | Jan 1978 | |
4089975 | Wade et al. | May 1978 | |
4162330 | Ehrenfreund | Jul 1979 | |
4170657 | Rigterink | Oct 1979 |
Number | Date | Country |
---|---|---|
2601780 | Jul 1977 | DEX |
Entry |
---|
Wellinga et al., CA 79:88264(d), 1973. |