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D419671 | Jansen | Jan 2000 | |
1727755 | Dickinson | Sep 1929 | |
1742497 | Dickinson | Jan 1930 | |
1793068 | Dickinson | Feb 1931 | |
2158593 | Scrimgeour | May 1939 | |
2371086 | Watson et al. | Mar 1945 | |
2677374 | Burnside | May 1954 | |
2755801 | Morando | Jul 1956 | |
2764978 | Everett | Oct 1956 | |
2811155 | Dunnican | Oct 1957 | |
3491757 | Arce | Jan 1970 | |
4043334 | Brown et al. | Aug 1977 | |
4187848 | Taylor | Feb 1980 | |
4266815 | Aalto et al. | May 1981 | |
4597758 | Aalto et al. | Jul 1986 | |
4636201 | Ambrose et al. | Jan 1987 | |
4676530 | Nordgren et al. | Jun 1987 | |
4747835 | Sandhaus | May 1988 | |
4774772 | Vetter et al. | Oct 1988 | |
4781701 | Geprags | Nov 1988 | |
4834715 | Hanifl | May 1989 | |
4874381 | Vetter | Oct 1989 | |
4944736 | Holtz | Jul 1990 | |
5069670 | Vetter et al. | Dec 1991 | |
5100010 | Waters | Mar 1992 | |
5104379 | Nakamura et al. | Apr 1992 | |
5135496 | Vetter et al. | Aug 1992 | |
5135513 | Meyer et al. | Aug 1992 | |
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5405340 | Fageol et al. | Apr 1995 | |
5437650 | Larkin et al. | Aug 1995 | |
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Number | Date | Country |
---|---|---|
0 022 576 A1 | Jan 1981 | EPX |
0 589 379 A1 | Feb 1994 | EPX |
0 462 355 A1 | Mar 1994 | EPX |
387123 | Feb 1908 | FRX |