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发明名称
摘要
申请公布号
DE8812346(U1)
申请公布日期
1990.02.01
申请号
DE19880012346U
申请日期
1988.09.29
申请人
SIEMENS AG, 1000 BERLIN UND 8000 MUENCHEN, DE
发明人
分类号
H01J29/62;H01J31/50
主分类号
H01J29/62
代理机构
代理人
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