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发明名称
Valve
摘要
申请公布号
US2754844(A)
申请公布日期
1956.07.17
申请号
US19520297729
申请日期
1952.07.08
申请人
DURABLA MANUFACTURING COMPANY
发明人
BLACKFORD RAYMOND H.
分类号
F04B39/10
主分类号
F04B39/10
代理机构
代理人
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