Number | Date | Country | Kind |
---|---|---|---|
81 08512 | Apr 1981 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
4135010 | Klebe et al. | Jan 1979 | |
4293426 | Gago | Oct 1981 | |
4321301 | Brichard et al. | Mar 1982 |
Number | Date | Country |
---|---|---|
B0002543 | Oct 1981 | EPX |
2376695 | Aug 1978 | FRX |
2383880 | Oct 1978 | FRX |
Entry |
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Abstract of Japanese Patent No. 059303/75 from Patent Index of Derwent Publishing. |