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发明名称
摘要
申请公布号
FR1548277(A)
申请公布日期
1968.12.06
申请号
FRD1548277
申请日期
1967.03.31
申请人
发明人
分类号
F16K1/40;F16L55/04
主分类号
F16K1/40
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