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|---|---|---|---|
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| D377654 | Jedlicka et al. | Jan 1997 | |
| D387782 | Letendre | Dec 1997 | |
| 4174100 | Estess | Nov 1979 | |
| 4206910 | Biesemeyer | Jun 1980 | |
| 4322066 | Disney | Mar 1982 | |
| 4521006 | Waters | Jun 1985 | |
| 4558618 | Bachmann et al. | Dec 1985 | |
| 4593590 | Gray | Jun 1986 | |
| 4600184 | Ashworth | Jul 1986 | |
| 4658687 | Haas et al. | Apr 1987 | |
| 4846036 | Metzger, Jr. et al. | Jul 1989 | |
| 4987813 | Viazanko | Jan 1991 | |
| 5018562 | Adams | May 1991 | |
| 5078373 | Miller | Jan 1992 | |
| 5181446 | Theising | Jan 1993 |