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Number | Date | Country |
---|---|---|
0 401 036 | Dec 1990 | EP |
0664218 | Jul 1995 | EP |
62294569 | Dec 1987 | JP |
01061277 | Aug 1989 | JP |
WO 9904368 | Jan 1999 | WO |
Entry |
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European Patent Office Search Report dated Mar. 1, 2001. |