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| D337501 | Witt | Jul 1993 | |
| D343104 | Hoshino | Jan 1994 | |
| 3160995 | Danuski, Jr. | Dec 1964 | |
| 4905420 | Flachenecker et al. | Mar 1990 | |
| 5022189 | Saul | Jun 1991 | |
| 5123216 | Kloss et al. | Jun 1992 | |
| 5398457 | Updegrave et al. | Mar 1995 | |
| 5470272 | Kikuchi et al. | Nov 1995 | |
| 5533926 | Nemazi | Jul 1996 | |
| 5558569 | Lee | Sep 1996 |