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发明名称
Valve closure means
摘要
申请公布号
US2603102(A)
申请公布日期
1952.07.15
申请号
US19460710003
申请日期
1946.11.15
申请人
CLARENCE HOBBS JAMES
发明人
HOBBS JAMES CLARENCE
分类号
F16K31/50
主分类号
F16K31/50
代理机构
代理人
主权项
地址
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