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发明名称
Process and apparatus for the production of metal tubes with inwardly thickened ends
摘要
申请公布号
GB376695(A)
申请公布日期
1932.07.14
申请号
GB19320011104
申请日期
1932.04.18
申请人
MANNESMANNROEHREN-WERKE
发明人
分类号
B21B21/00
主分类号
B21B21/00
代理机构
代理人
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