Number | Date | Country | Kind |
---|---|---|---|
3741088 | Dec 1987 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4049458 | Boie et al. | Sep 1977 | |
4529691 | Renner et al. | Jul 1985 | |
4617256 | Kunitz et al. | Oct 1986 |
Entry |
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Chem Abstracts 98:44120s "Photographic . . . Couplers", abstract of DE 3,107,173, Wolff et al, 1983. |