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4859648 | Landis et al. | Aug 1989 | |
5057296 | Beck | Oct 1991 | |
5098684 | Kresge et al. | Mar 1992 | |
5102643 | Kresge et al. | Apr 1992 | |
5110572 | Calabro et al. | May 1992 | |
5156829 | McCullen et al. | Oct 1992 |
Number | Date | Country |
---|---|---|
756744 | Oct 1975 | ZAX |
Entry |
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