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经营范围
发明名称
Gauge
摘要
申请公布号
US2165881(A)
申请公布日期
1939.07.11
申请号
US19380244493
申请日期
1938.12.07
申请人
ROY BENNETT LE
发明人
BENNETT LE ROY
分类号
G01B3/30
主分类号
G01B3/30
代理机构
代理人
主权项
地址
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