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5164982 | Davis | Nov 1992 | |
5434590 | Dinwiddie, Jr. et al. | Jul 1995 | |
5515424 | Kenney | May 1996 | |
5537462 | Utter et al. | Jul 1996 | |
5606361 | Davidsohn et al. | Feb 1997 | |
5636269 | Eisdorfer | Jun 1997 | |
5657246 | Hogan et al. | Aug 1997 | |
5757781 | Gilman et al. | May 1998 |
Entry |
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International Search Report for International Appln. No. PCT/US96/20772 filed on Dec. 5, 1996. |