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发明名称
HUELSROHR FUER DIE VERSTELLORGANE VON IM ERDBODEN LIEGENDEN VENTILEN.
摘要
申请公布号
DE1791462(U)
申请公布日期
1959.07.02
申请号
DE195600E8055U
申请日期
1956.02.03
申请人
EISENWERKE FRIED. WILH. DUEKER A.G.
发明人
分类号
主分类号
代理机构
代理人
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