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经营范围
发明名称
Valve cage
摘要
申请公布号
US2462605(A)
申请公布日期
1949.02.22
申请号
US19440552529
申请日期
1944.09.02
申请人
BRIDWELL CHALON E
发明人
BRIDWELL CHALON E.
分类号
F04B47/00
主分类号
F04B47/00
代理机构
代理人
主权项
地址
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