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发明名称
Absperrvorrichtung fuer unter Druck stehende Leitungsrohre
摘要
申请公布号
DE673349(C)
申请公布日期
1939.03.20
申请号
DE1934B180860D
申请日期
1934.09.19
申请人
OSKAR BOESCHKE
发明人
分类号
F16K3/03
主分类号
F16K3/03
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代理人
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