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发明名称
RUECKSCHLAGVENTIL.
摘要
申请公布号
DE1727423(U)
申请公布日期
1956.08.02
申请号
DE195300G7471U
申请日期
1953.06.24
申请人
GUSTAV F. GERDTS K.G.
发明人
分类号
主分类号
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代理人
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