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发明名称
Improved apparatus for regulating, varying or controlling the flow of solid, gaseous or liquid media
摘要
申请公布号
GB326546(A)
申请公布日期
1930.03.17
申请号
GB19280037139
申请日期
1928.12.15
申请人
HENRY COLEMAN HEAD
发明人
分类号
F16K7/08
主分类号
F16K7/08
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代理人
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