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经营范围
发明名称
Electroscope
摘要
申请公布号
US2677773(A)
申请公布日期
1954.05.04
申请号
US19500174920
申请日期
1950.07.20
申请人
NATIONAL RESEARCH COUNCIL
发明人
CARMICHAEL HUGH;SALMON PERCY GEORGE
分类号
H01J47/04
主分类号
H01J47/04
代理机构
代理人
主权项
地址
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