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发明名称
Appareil pour effectuer la trempe superficielle des parois intérieures des pièces creuses
摘要
申请公布号
FR711824(A)
申请公布日期
1931.09.18
申请号
FRD711824
申请日期
1931.02.24
申请人
发明人
KLOPP FRIEDRICH
分类号
C21D1/63
主分类号
C21D1/63
代理机构
代理人
主权项
地址
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