Number | Name | Date | Kind |
---|---|---|---|
3314073 | Becker | Apr 1967 | |
3689894 | Laura et al. | Sep 1972 | |
3911444 | Lou et al. | Oct 1975 | |
4278756 | Bouldin et al. | Jul 1981 | |
4284716 | Drexler et al. | Aug 1981 |
Entry |
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Klein et al., "Color of Colloidal Silver Sols in Gelatin", Photo. Sci. and Engr., vol. 5, No. 1, 2/1961, pp. 5-11. |