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经营范围
发明名称
Tube with external longitudinal ribs
摘要
申请公布号
US2835275(A)
申请公布日期
1958.05.20
申请号
US19530378498
申请日期
1953.09.04
申请人
MANNESMANN AKTIENGESELLSCHAFT
发明人
SCHOLTEN KARL ERNST
分类号
B21B21/00;B21D15/02;F16L9/00;F16L9/02
主分类号
B21B21/00
代理机构
代理人
主权项
地址
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