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发明名称
Lampe à incandescence négative
摘要
申请公布号
FR692232(A)
申请公布日期
1930.10.31
申请号
FRD692232
申请日期
1930.03.18
申请人
WESTINGHOUSE LAMP COMPANY
发明人
分类号
H01J61/64
主分类号
H01J61/64
代理机构
代理人
主权项
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