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经营范围
发明名称
CEMENTED CARBIDE TIP
摘要
申请公布号
ZA8905533(B)
申请公布日期
1990.05.30
申请号
ZA19890005533
申请日期
1989.07.20
申请人
KENNAMETAL INC.
发明人
STEPHEN P. STIFFLER
分类号
E21C
主分类号
E21C
代理机构
代理人
主权项
地址
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