Number | Name | Date | Kind |
---|---|---|---|
2862880 | Clemens | Dec 1958 | |
3285849 | Watanabe et al. | Nov 1966 | |
3489681 | Flock et al. | Jan 1970 | |
4137165 | Coscia et al. | Jan 1979 | |
4450092 | Huang | May 1984 | |
4582627 | Carlsson | Apr 1986 | |
4610801 | Matthews et al. | Sep 1986 | |
4655934 | Rose et al. | Apr 1987 | |
4708814 | Stewart | Nov 1987 |
Number | Date | Country |
---|---|---|
0145686 | Jun 1985 | EPX |
61-068196 | Apr 1986 | JPX |
Entry |
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Calgon Corporation bulletins 12-3166, 12-3179 and 12-3156. |