Number | Date | Country | Kind |
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198 55 329 | Dec 1998 | DE |
Number | Name | Date | Kind |
---|---|---|---|
3666680 | Briggs | May 1972 | |
4708816 | Chang et al. | Nov 1987 | |
5057236 | Petrin et al. | Oct 1991 | |
5733763 | Markussen et al. | Mar 1998 |
Number | Date | Country |
---|---|---|
0 622 451 | Nov 1994 | EP |
Entry |
---|
Jorn. Com. Esp.Deterg.27, (1997), pp. 213-220. |