Number | Date | Country | Kind |
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197 57 485 | Dec 1997 | DE |
Number | Name | Date | Kind |
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4065252 | Hemsath et al. | Dec 1977 | |
4444556 | Andersson | Apr 1984 | |
4497180 | Graham | Feb 1985 | |
5440889 | Sippel et al. | Aug 1995 |
Number | Date | Country |
---|---|---|
4035893 | Jan 1992 | DE |
0098492 | Jan 1984 | EP |
0140026 | May 1985 | EP |
0462783 | Dec 1991 | EP |
0 578 607 | Jan 1994 | EP |
WO 9219395 | Nov 1992 | WO |
Entry |
---|
Stahl U. Eisen 110 (1990) No. 6, pp 40, “QST Method”. |
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