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经营范围
发明名称
Electric gauge
摘要
申请公布号
US1927337(A)
申请公布日期
1933.09.19
申请号
US19320639894
申请日期
1932.10.27
申请人
COWAN RICH W
发明人
COWAN RICH W.
分类号
G01F23/44
主分类号
G01F23/44
代理机构
代理人
主权项
地址
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