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经营范围
发明名称
Gauge
摘要
申请公布号
US1917637(A)
申请公布日期
1933.07.11
申请号
US19310517650
申请日期
1931.02.24
申请人
DWYER FRANK W
发明人
DWYER FRANK W.
分类号
G01L7/18
主分类号
G01L7/18
代理机构
代理人
主权项
地址
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