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发明名称
Valve
摘要
申请公布号
US1751122(A)
申请公布日期
1930.03.18
申请号
US19280278157
申请日期
1928.05.16
申请人
BARKER JOHN J
发明人
BARKER JOHN J.
分类号
F16K3/314
主分类号
F16K3/314
代理机构
代理人
主权项
地址
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