Number | Date | Country | Kind |
---|---|---|---|
3108913 | Mar 1981 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
955012 | Sulman | Apr 1910 | |
1310051 | Blomfield | Jul 1919 | |
1457077 | Janney | May 1923 | |
1921220 | Daman | Aug 1933 | |
2682337 | Hodges | Jun 1954 | |
3255882 | McCarty et al. | Jun 1966 | |
3735931 | Weston | May 1973 | |
4121945 | Hurst et al. | Oct 1978 |
Number | Date | Country |
---|---|---|
2095697 | Oct 1982 | GBX |
Entry |
---|
Dr. Fuerstenau--Froth Flotation--50th Anniversary vol. published by Am. Inst. of Mining, Metallurgical & Petr. Eng., 2/15/63, pp. 340, 341 & 539-567. |