Number | Date | Country | Kind |
---|---|---|---|
94 09013 | Jul 1994 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2666686 | Miller et al. | Jan 1954 | |
2851792 | Steimel et al. | Sep 1958 | |
3336104 | Miller | Aug 1967 | |
3887689 | Carding et al. | Jun 1975 |
Number | Date | Country |
---|---|---|
799251 | Aug 1958 | GBX |
Entry |
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John Wiley & Sons: "Encyclopedia of Chemical Technology" vol. 1, 1978, pp. 875-876. |
Te-Pang Hou: "Manufacture of Soda". Hafner Publishing Company, 1969, p. 221. |