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| D347563 | Okada | Jun 1994 | |
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| D349444 | Schmidt | Aug 1994 | |
| D386959 | Okada | Dec 1997 | |
| D395219 | Ghavami | Jun 1998 | |
| D398829 | Okada | Sep 1998 | |
| D399114 | Okada | Oct 1998 | |
| D412654 | Gilbert et al. | Aug 1999 | |
| D412655 | Gilbert et al. | Aug 1999 | |
| D412822 | Gilbert et al. | Aug 1999 | |
| D413247 | Schmidt | Aug 1999 | |
| D419850 | Hsu | Feb 2000 | |
| 2960769 | Matwijcow | Nov 1960 | |
| 4825552 | Bendickson et al. | May 1989 | |
| 5022156 | Kallens et al. | Jun 1991 | |
| 5386632 | Schmidt | Feb 1995 | |
| 5502896 | Chen | Apr 1996 | |
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