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发明名称
DIRECT PRODUCTION OF TUNGSTEN CARBIDE FROM TUNGSTIC OXIDE
摘要
申请公布号
CA547038(A)
申请公布日期
1957.10.01
申请号
CAD547038
申请日期
申请人
UNION CARBIDE AND CARBON CORPORATION
发明人
JOHN D. METTLER, JR.
分类号
主分类号
代理机构
代理人
主权项
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