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发明名称
Rückstromsperre in Wasserleitungen
摘要
申请公布号
DE1459532(B1)
申请公布日期
1969.12.18
申请号
DE1962G034822
申请日期
1962.04.26
申请人
GRISWOLD DONALD G;CHARD MILES M;GRAU WILLIAM S;WYCKOFF FRED K
发明人
GRISWOLD DONALD G;CHARD MILES M;GRAU WILLIAM S;WYCKOFF FRED K
分类号
E03B7/07;E03C1/10;F16K15/00;F16K17/34;F16K31/365
主分类号
E03B7/07
代理机构
代理人
主权项
地址
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