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发明名称
Lampe de puissance avec cathode incandescente tubulaire
摘要
申请公布号
FR722976(A)
申请公布日期
1932.03.31
申请号
FRD722976
申请日期
1931.09.18
申请人
SIEMENS & HALSKE AKTIEN-GESELLSCHAFT
发明人
分类号
H01J1/20
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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