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发明名称
Improvements in or relating to quick-closing shut-off valves
摘要
申请公布号
GB689372(A)
申请公布日期
1953.03.25
申请号
GB19510020502
申请日期
1951.08.30
申请人
GUSTAV FRIEDRICH GERDTS
发明人
分类号
F16K27/02;F16K31/56;F22B37/54
主分类号
F16K27/02
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代理人
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