Number | Date | Country | Kind |
---|---|---|---|
8332486 | Dec 1983 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3156654 | Konecny et al. | Nov 1964 | |
3398096 | Das et al. | Aug 1968 | |
3532634 | Woods | Oct 1970 | |
3549539 | Mallows | Dec 1970 | |
4208295 | Sai et al. | Jun 1980 | |
4430243 | Bragg | Feb 1984 |
Number | Date | Country |
---|---|---|
25608 | Mar 1981 | EPX |
72166 | Feb 1983 | EPX |
82563 | Jun 1983 | EPX |
78209 | Jul 1978 | JPX |
Entry |
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Chalmers, L. "Domestic and Industrial Chemical Specialties", The Macmillan Co. (1966), pp. 35, 38. |