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发明名称
Elektronenroehre mit mindestens einer Sekundaeremissionselektrode
摘要
申请公布号
DE755478(C)
申请公布日期
1944.09.28
申请号
DE1938N041815
申请日期
1938.03.29
申请人
PHILIPS PATENTVERWALTUNG G.M.B.H.
发明人
BRUINING HAJO DR.;BOER JAN HENDRIK DE DR.;VEENEMANS CORNELIS FREDERIK DR.
分类号
H01J43/28
主分类号
H01J43/28
代理机构
代理人
主权项
地址
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