This is a division of application Ser. No. 561,202 filed Jul. 31, 1990 now U.S. Pat. No. 5,006,563 which is a continuation of application Ser. No. 450,502 filed Dec. 14, 1989 now abandoned.
Number | Name | Date | Kind |
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3077470 | Burckhalter | Feb 1963 | |
3839361 | Terayama | Oct 1974 | |
3957777 | Toth | May 1976 | |
3996279 | Schlager | Dec 1976 | |
4205085 | Shepherd | May 1980 | |
4245099 | Itoh | Jan 1981 | |
4273785 | Shepherd | Jun 1981 | |
5006563 | Hamer et al. | Apr 1991 |
Number | Date | Country |
---|---|---|
390398 | Aug 1990 | DEX |
0203048 | Dec 1982 | JPX |
60-11401 | Jan 1985 | JPX |
60-11452 | Jan 1985 | JPX |
2026480 | Feb 1980 | GBX |
Entry |
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Derwent abstract 30304K/13 (1982). |
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Hirota, T. et al, CA, 105, 208699d (1986). |
Number | Date | Country | |
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Parent | 561202 | Jul 1990 |
Number | Date | Country | |
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Parent | 450502 | Dec 1989 |