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经营范围
发明名称
Photo-electric tube
摘要
申请公布号
US1871357(A)
申请公布日期
1932.08.09
申请号
US19210481469
申请日期
1921.06.30
申请人
WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY
发明人
BRACE PORTER H.
分类号
H01J40/04
主分类号
H01J40/04
代理机构
代理人
主权项
地址
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