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3920990 | Van Nieuwland et al. | Nov 1975 | |
4177379 | Fuukawa et al. | Dec 1979 | |
4217495 | robinson | Aug 1980 | |
4219731 | Migitaka et al. | Aug 1980 | |
4308457 | Reimer | Dec 1981 | |
4535249 | Reeds | Aug 1985 | |
4588890 | Finnes | May 1986 | |
4600839 | Ichihashi et al. | Jul 1986 |
Number | Date | Country |
---|---|---|
0186851A2 | Sep 1986 | EPX |
Entry |
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