Number | Name | Date | Kind |
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D293226 | Whitson | Dec 1987 | |
D302143 | Whitson | Jul 1989 | |
D377780 | MacNeil | Feb 1997 | |
4592583 | Dresen et al. | Jun 1986 | |
5083827 | Hollenbaugh, Sr. | Jan 1992 | |
5167433 | Ryan | Dec 1992 | |
5269447 | Gower et al. | Dec 1993 | |
5381940 | Wright | Jan 1995 | |
5584412 | Wang | Dec 1996 | |
5769479 | Emery | Jun 1998 |