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经营范围
发明名称
Electron valve cathode system, particularly for doorbell amplifiers
摘要
申请公布号
CZ4832(U1)
申请公布日期
1996.07.17
申请号
CZ19960005209U
申请日期
1996.04.15
申请人
VAIC ALESA ING.
发明人
VAIC ALESA ING.
分类号
H01J19/02;(IPC1-7):H01J019/02
主分类号
H01J19/02
代理机构
代理人
主权项
地址
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