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发明名称
Method of treating tubes
摘要
申请公布号
US1854376(A)
申请公布日期
1932.04.19
申请号
US19280249904
申请日期
1928.01.27
申请人
ARCTURUS RADIO TUBE COMPANY
发明人
KRAHL WALTER LOUIS
分类号
H01J19/44
主分类号
H01J19/44
代理机构
代理人
主权项
地址
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