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经营范围
发明名称
Sight gauge
摘要
申请公布号
US1877509(A)
申请公布日期
1932.09.13
申请号
US19310569805
申请日期
1931.10.19
申请人
EDWIN HUBLEY FRED
发明人
HUBLEY FRED EDWIN
分类号
G01P13/00
主分类号
G01P13/00
代理机构
代理人
主权项
地址
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