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经营范围
发明名称
Tube électronique
摘要
申请公布号
FR783360(A)
申请公布日期
1935.07.11
申请号
FRD783360
申请日期
1934.12.27
申请人
NAAMLOOZE VENNOOTSCHAP MACHINERIEEN- EN APPARATEN FABRIEKEN MEAF
发明人
分类号
H01J25/00
主分类号
H01J25/00
代理机构
代理人
主权项
地址
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