Number | Date | Country | Kind |
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3-028152 | Feb 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4328294 | Tanaka et al. | May 1982 | |
4923830 | Everhart et al. | May 1990 | |
5011673 | Kriechbaum et al. | Apr 1991 |
Number | Date | Country |
---|---|---|
0166445 | Jan 1986 | EPX |
0194556 | Sep 1986 | EPX |
0314939 | May 1989 | EPX |
Entry |
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Patent Abstracts of Japan, vol. 13, No. 556, JP-A-1 230 466 (1989). |
Chemical Abstracts, vol. 110, No. 22, Abstract No. 198038Z (1988). |