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发明名称
Vapor electric device
摘要
申请公布号
US2216743(A)
申请公布日期
1940.10.08
申请号
US19380195420
申请日期
1938.03.11
申请人
BELA KARLOVITZ;DENES HALASZ
发明人
KARLOVITZ BELA;HALASZ DENES
分类号
H01J13/02
主分类号
H01J13/02
代理机构
代理人
主权项
地址
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