Number | Name | Date | Kind |
---|---|---|---|
1168062 | Deppeler | Jan 1916 | |
3881940 | Amundsen et al. | May 1975 | |
3889020 | Amundsen et al. | Jun 1975 | |
4400298 | Boocock et al. | Aug 1983 | |
4761247 | Rei et al. | Aug 1988 | |
4783221 | Grove | Nov 1988 | |
4839373 | Ito et al. | Jun 1989 | |
4950685 | Ward | Aug 1990 | |
4977186 | Gruening | Dec 1990 | |
5179116 | Goettsche et al. | Jan 1993 | |
5185214 | LeVan et al. | Feb 1993 | |
5300520 | Igarashi et al. | Apr 1994 | |
5462589 | Nicholas et al. | Oct 1995 | |
5536305 | Yu | Jul 1996 | |
5540954 | Nicholas et al. | Jul 1996 | |
5634967 | Williams et al. | Jun 1997 | |
5730907 | Schultz et al. | Mar 1998 | |
5944880 | Schultz et al. | Aug 1999 |
Number | Date | Country |
---|---|---|
2 025 469 | Jan 1980 | GB |
97.45236 | Apr 1997 | WO |
Entry |
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