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发明名称
EMBOSSED WASHER
摘要
申请公布号
EP1427913(B1)
申请公布日期
2006.02.15
申请号
EP20020757493
申请日期
2002.08.30
申请人
KENNAMETAL INC.
发明人
STIFFLER, STEPHEN, P.
分类号
E21C35/197
主分类号
E21C35/197
代理机构
代理人
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