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经营范围
发明名称
Procédé pour écailler des tuyaux soudés par contact
摘要
申请公布号
FR707353(A)
申请公布日期
1931.07.07
申请号
FRD707353
申请日期
1930.12.10
申请人
发明人
ALVERMANN EWALD
分类号
B21C43/00;B21C43/04
主分类号
B21C43/00
代理机构
代理人
主权项
地址
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