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发明名称
Pentode tube
摘要
申请公布号
US1869568(A)
申请公布日期
1932.08.02
申请号
US19300450076
申请日期
1930.05.06
申请人
ARCTURUS RADIO TUBE COMPANY
发明人
KRAHL WALTER LOUIS
分类号
H01J19/42
主分类号
H01J19/42
代理机构
代理人
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地址
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