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发明名称
Aus zwei Klappen bestehende, in Kanalrohre einzusetzende Rattensperre
摘要
申请公布号
DE654022(C)
申请公布日期
1937.12.09
申请号
DENDATH143440D
申请日期
申请人
AUGUST HARTMANN
发明人
分类号
E03F7/06
主分类号
E03F7/06
代理机构
代理人
主权项
地址
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