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经营范围
发明名称
Acier nitré et son procédé de fabrication
摘要
申请公布号
FR708194(A)
申请公布日期
1931.07.21
申请号
FRD708194
申请日期
1930.12.22
申请人
发明人
KROLL WILHELM
分类号
C23C8/00
主分类号
C23C8/00
代理机构
代理人
主权项
地址
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