Number | Date | Country | Kind |
---|---|---|---|
8515600 | Jun 1985 | GBX |
Number | Date | Country |
---|---|---|
1382925 | Feb 1975 | GBX |
1489394 | Oct 1977 | GBX |
1508856 | Apr 1978 | GBX |
1558663 | Jan 1980 | GBX |
Entry |
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Kirk-Othmer, Encyclopedia of Chemical Technology, Third Edition, vol. 17, 1982, p. 779. |