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发明名称
Vorrichtung zur Verhuetung des Rueckstaues von Abwasser mit Rueckstaudoppelverschluss, insbesondere bei Kellersinkkaesten
摘要
申请公布号
DE939620(C)
申请公布日期
1956.02.23
申请号
DE1951L011086
申请日期
1951.12.16
申请人
LOEFFLER WALTHER;JOHANNA LOEFFLER
发明人
LOEFFLER WALTHER
分类号
E03F5/042
主分类号
E03F5/042
代理机构
代理人
主权项
地址
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