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发明名称
Quecksilberkathodenstromrichterroehre
摘要
申请公布号
DE721081(C)
申请公布日期
1942.06.03
申请号
DE1937N040585D
申请日期
1937.04.11
申请人
PHILIPS PATENTVERWALTUNG G.M.B.H.
发明人
DRUYVESTEYN DR. MARI JOHAN;JURRIAANSE DR. TOM
分类号
H01J13/34;H01J13/48
主分类号
H01J13/34
代理机构
代理人
主权项
地址
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