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经营范围
发明名称
THERMIONIC TUBE STRUCTURE
摘要
申请公布号
CA458837(A)
申请公布日期
1949.08.09
申请号
CAD458837
申请日期
申请人
RAYTHEON MANUFACTURING COMPANY
发明人
WILLIAM BRADFORD REED
分类号
主分类号
代理机构
代理人
主权项
地址
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