Number | Name | Date | Kind |
---|---|---|---|
D306488 | Mosburg | Mar 1990 | |
3122347 | Robinson et al. | Feb 1964 | |
3807681 | Kane et al. | Apr 1974 | |
4123031 | Hyre | Oct 1978 | |
4179090 | Williams et al. | Dec 1979 | |
4452336 | Sickler | Jun 1984 | |
4522000 | Barari | Jun 1985 | |
4660800 | Horstketter | Apr 1987 | |
4846433 | Courtois et al. | Jul 1989 | |
4880203 | Holcomb et al. | Nov 1989 |