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经营范围
发明名称
Procédé pour la cémentation gazeuse de pièces en acier
摘要
申请公布号
FR835931(A)
申请公布日期
1939.01.05
申请号
FRD835931
申请日期
1938.03.30
申请人
发明人
RENAULT LOUIS
分类号
C23C8/22
主分类号
C23C8/22
代理机构
代理人
主权项
地址
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