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发明名称
Pump
摘要
申请公布号
US2215138(A)
申请公布日期
1940.09.17
申请号
US19380244509
申请日期
1938.12.08
申请人
ROY STEVENS
发明人
STEVENS ROY
分类号
F04B1/12;F04B1/24
主分类号
F04B1/12
代理机构
代理人
主权项
地址
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