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发明名称
Hot top structure
摘要
申请公布号
GB1137528(A)
申请公布日期
1968.12.27
申请号
GB19660044140
申请日期
1966.10.03
申请人
OGLEBAY NORTON COMPANY
发明人
分类号
B22D7/10
主分类号
B22D7/10
代理机构
代理人
主权项
地址
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