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5133205 | Rostik et al. | Jul 1992 | |
5694799 | Wolpert et al. | Dec 1997 |
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57-154301 | Sep 1982 | JPX |
1-205810 | Aug 1989 | JPX |
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9006821 | Jun 1990 | WOX |
Entry |
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Japanese Patent Abstract, 08276212, Nippon Steel Corp., Oct. 22, 1996. |