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发明名称
Valve
摘要
申请公布号
US1823452(A)
申请公布日期
1931.09.15
申请号
US19290358303
申请日期
1929.04.26
申请人
HERON SAM D
发明人
HERON SAM D.
分类号
F01L3/14
主分类号
F01L3/14
代理机构
代理人
主权项
地址
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