Number | Date | Country | Kind |
---|---|---|---|
3-354275 | Dec 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3821069 | Wurzburg | Jan 1974 | |
4514229 | Sato et al. | Apr 1985 |
Number | Date | Country |
---|---|---|
0468280 | Jan 1992 | EPX |
2137613 | Oct 1984 | GBX |
Entry |
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Database WPIL, Section Ch, Week 8505, Derwert Publications Ltd., London, GB; Class A97, AN 85-028420 and JP-A-59 223 398 (Seiko Chem Ind KK et al.). Dec. 15, 1984, abstract. |