Number | Name | Date | Kind |
---|---|---|---|
3553264 | Addor | Jan 1971 | |
3742036 | Perronnet | Jun 1973 | |
4879314 | Hsu | Nov 1989 | |
5110822 | Sherba et al. | May 1992 |
Number | Date | Country |
---|---|---|
1 535 082 | Oct 1974 | FRX |
556 138 | Nov 1974 | CHX |
958 631 | May 1964 | GBX |
1 307 223 | Feb 1973 | GBX |
Entry |
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Derwent Publications Ltd., London, GB, Section CH, Week 9410, Class C03, AN 94-077195, XP002047320 and JP 06 009 307 A (Junsei Kagaku KK), 18 Jan. 1994, abstract. |