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发明名称
Gauge-glass illuminator
摘要
申请公布号
US1786183(A)
申请公布日期
1930.12.23
申请号
US19290343682
申请日期
1929.03.01
申请人
NATIONAL COMPANY, INC.
发明人
WILSON CLARENCE E.
分类号
G01F23/02
主分类号
G01F23/02
代理机构
代理人
主权项
地址
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