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发明名称
Device for manufacturing tungsten carbide
摘要
申请公布号
US1932499(A)
申请公布日期
1933.10.31
申请号
US19320585743
申请日期
1932.01.09
申请人
HUGHES TOOL COMPANY
发明人
WOODS GORHAM W.
分类号
C22B4/00
主分类号
C22B4/00
代理机构
代理人
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