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经营范围
发明名称
Procédé de fabrication d'unicristaux de tungstène quasi parfaits
摘要
申请公布号
FR1168239(A)
申请公布日期
1958.12.05
申请号
FRD1168239
申请日期
1956.12.21
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
C22B34/36;C30B23/00
主分类号
C22B34/36
代理机构
代理人
主权项
地址
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