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发明名称
Column level gauge
摘要
申请公布号
US2031533(A)
申请公布日期
1936.02.18
申请号
US19330665095
申请日期
1933.04.08
申请人
GRAY JAMES W
发明人
GRAY JAMES W.
分类号
G01F23/16
主分类号
G01F23/16
代理机构
代理人
主权项
地址
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