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经营范围
发明名称
Pump valve
摘要
申请公布号
US2197606(A)
申请公布日期
1940.04.16
申请号
US19380216557
申请日期
1938.06.29
申请人
BIRCH WILLIAM T
发明人
BIRCH WILLIAM T.
分类号
F04B53/10;F16K15/02
主分类号
F04B53/10
代理机构
代理人
主权项
地址
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