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发明名称
Cone valve
摘要
申请公布号
US2947284(A)
申请公布日期
1960.08.02
申请号
US19580747317
申请日期
1958.07.08
申请人
NICHOLSON JOHN P
发明人
NICHOLSON JOHN P.
分类号
F16K31/06
主分类号
F16K31/06
代理机构
代理人
主权项
地址
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