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发明名称
摘要
申请公布号
DE2217204(A1)
申请公布日期
1972.10.26
申请号
DE19722217204
申请日期
1972.04.10
申请人
发明人
分类号
F16K1/02;F16K31/50;(IPC1-7):F16K1/02
主分类号
F16K1/02
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