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发明名称
Method and apparatus for controlling the level of an interface
摘要
申请公布号
US3375928(A)
申请公布日期
1968.04.02
申请号
US19650517032
申请日期
1965.12.28
申请人
UNITED STATES STEEL CORPORATION
发明人
CHASE PAUL W.
分类号
G05D9/12
主分类号
G05D9/12
代理机构
代理人
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