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发明名称
Piston valve
摘要
申请公布号
US2158591(A)
申请公布日期
1939.05.16
申请号
US19370140541
申请日期
1937.05.03
申请人
RAMSEY JESSE A
发明人
RAMSEY JESSE A.
分类号
F01B25/10
主分类号
F01B25/10
代理机构
代理人
主权项
地址
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