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发明名称
Vorrichtung zum Schweissen von Rohren
摘要
申请公布号
DE594272(C)
申请公布日期
1934.03.14
申请号
DE1932E043593D
申请日期
1932.12.01
申请人
HEINRICH ESSER
发明人
分类号
B21C37/08
主分类号
B21C37/08
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