Number | Date | Country | Kind |
---|---|---|---|
198 41 542 | Sep 1998 | DE |
Number | Name | Date | Kind |
---|---|---|---|
4245063 | Thill et al. | Jan 1981 | |
5196544 | Hase | Mar 1993 | |
5292807 | Schaefer et al. | Mar 1994 |
Number | Date | Country |
---|---|---|
44 42 908 | Jun 1996 | DE |
Entry |
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Derwent Abstracts, AN 1994-023061, JP 05 331400, Dec. 14, 1993. |
Derwent Abstracts, AN 1986-314249, JP 61 231064, Oct. 15, 1986. |