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发明名称
Tube-rolling mill
摘要
申请公布号
US1800891(A)
申请公布日期
1931.04.14
申请号
US19290329998
申请日期
1929.01.03
申请人
FRITZ KOCKS
发明人
KOCKS FRITZ
分类号
B21B19/04
主分类号
B21B19/04
代理机构
代理人
主权项
地址
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