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发明名称
Liquid level control device
摘要
申请公布号
US1981800(A)
申请公布日期
1934.11.20
申请号
US19310540965
申请日期
1931.05.29
申请人
STANDARD OIL DEVELOPMENT COMPANY
发明人
CALKINS AUSTIN EARLE
分类号
G05D9/02
主分类号
G05D9/02
代理机构
代理人
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地址
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