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发明名称
摘要
申请公布号
DE2063682(A1)
申请公布日期
1972.07.06
申请号
DE19702063682
申请日期
1970.12.24
申请人
发明人
分类号
E03C1/042;F16K27/00;(IPC1-7):E03C1/04
主分类号
E03C1/042
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代理人
主权项
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