Number | Name | Date | Kind |
---|---|---|---|
4153523 | Koontz et al. | May 1978 | |
4230538 | Turner | Oct 1980 | |
4310392 | Kohl | Jan 1982 |
Number | Date | Country |
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2939920 | Apr 1981 | DEX |
Entry |
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E. M. Wise entitled Palladium; Recover, Properties, and Uses, Academic Press, New York, 1968, Chapter 6. |