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发明名称
Liquid level control system
摘要
申请公布号
US2620819(A)
申请公布日期
1952.12.09
申请号
US19480024252
申请日期
1948.04.30
申请人
CAMPBELL JULIAN A
发明人
CAMPBELL JULIAN A.
分类号
G05D9/02
主分类号
G05D9/02
代理机构
代理人
主权项
地址
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