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发明名称
Vakuumgefaess mit mehreren ringfoermigen Elektrodendurchfuehrungen
摘要
申请公布号
DE575786(C)
申请公布日期
1933.05.03
申请号
DENDATS077522D
申请日期
申请人
SIEMENS-SCHUCKERTWERKE AKT.-GES.
发明人
分类号
H01J5/42
主分类号
H01J5/42
代理机构
代理人
主权项
地址
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