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5644344 | Haselby | Jul 1997 | |
5796414 | Sievert et al. | Aug 1998 | |
5847722 | Hackleman | Dec 1998 |
Number | Date | Country |
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0589718A | Mar 1994 | EPX |
0735504A2 | Oct 1996 | EPX |
0867298A2 | Sep 1998 | EPX |
0874329A | Oct 1998 | EPX |
Entry |
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European Search Repor dated Mar. 10, 1999 for related European Patent Application 98309358,4-4304; filed Nov. 16, 1998. |