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经营范围
发明名称
Counting tube
摘要
申请公布号
US2981857(A)
申请公布日期
1961.04.25
申请号
US19560568480
申请日期
1956.02.29
申请人
GENERAL ELECTRIC COMPANY
发明人
WILSON VOLNEY COLVIN
分类号
H01J47/12
主分类号
H01J47/12
代理机构
代理人
主权项
地址
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