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发明名称
Purification of tungsten carbide
摘要
申请公布号
US2913314(A)
申请公布日期
1959.11.17
申请号
US19570642376
申请日期
1957.02.26
申请人
GENERAL ELECTRIC COMPANY
发明人
OSTHOFF ROBERT C.
分类号
C01B31/34
主分类号
C01B31/34
代理机构
代理人
主权项
地址
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