Number | Date | Country | Kind |
---|---|---|---|
197 22 567 | May 1997 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2042220 | Groll et al. | May 1936 | |
3284170 | Neely | Nov 1966 | |
3778477 | Mueller et al. | Dec 1973 | |
3894916 | Fischer et al. | Jul 1975 | |
4094535 | Yang et al. | Jun 1978 | |
4110403 | Ichikawa et al. | Aug 1978 | |
4154762 | Huang et al. | May 1979 | |
4165342 | Dudeck et al. | Aug 1979 | |
5149884 | Brenner et al. | Sep 1992 |
Number | Date | Country |
---|---|---|
2 231 650 | Dec 1974 | FRX |
2 386 509 | Nov 1978 | FRX |
20 20 865 | Nov 1971 | DEX |
2 243 810 | Oct 1973 | DEX |
25 17 859 | Mar 1976 | DEX |
27 15 209 | Nov 1978 | DEX |
Entry |
---|
Derwent Abstracts, JP 60-246340, Dec. 06, 1985. |
Derwent Abstracts, JP 58-059933, Sep. 04, 1983. |