Number | Name | Date | Kind |
---|---|---|---|
1514737 | Smith | Nov 1924 | |
1794585 | Cain | Mar 1931 | |
1799157 | Drouilly | Apr 1931 | |
2820748 | Von Bichowshy | Jan 1958 | |
3206385 | Meinlejohn et al. | Sep 1965 | |
3278400 | Strolmeier | Oct 1960 | |
3493433 | Hoffmann | Feb 1970 | |
3707407 | Chilton et al. | Dec 1972 | |
3880743 | Lang | Apr 1975 | |
3966569 | Reinhardt et al. | Jun 1976 | |
4078978 | Zirngiebl | Mar 1978 | |
4164456 | Korenowski | Aug 1979 |
Number | Date | Country |
---|---|---|
274495 | May 1930 | ITX |
349490 | Sep 1972 | SUX |
Entry |
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"Refining of Amfrom Precious Metal by Liquid Liquid Extraction", by B. F. Rimmer, Chem. & Industry, 1-19-74. |