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发明名称
Verfahren und Anordnung zum Schutze von Sekundaeremissionsschichten
摘要
申请公布号
DE904445(C)
申请公布日期
1954.02.18
申请号
DE1936A011779D
申请日期
1936.12.25
申请人
发明人
KATZ DR. PHIL. NAT. HELMUT
分类号
H01J1/32
主分类号
H01J1/32
代理机构
代理人
主权项
地址
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