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发明名称
Improvements in or relating to automatic-closure valves
摘要
申请公布号
GB796013(A)
申请公布日期
1958.06.04
申请号
GB19540030893
申请日期
1954.10.26
申请人
COAL INDUSTRY (PATENTS) LIMITED
发明人
DAY CHARLES EDWARD
分类号
F16K31/385
主分类号
F16K31/385
代理机构
代理人
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地址
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