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发明名称
Einrichtung zum Entlueften von Vakuumgefaessen
摘要
申请公布号
DE577793(C)
申请公布日期
1933.06.03
申请号
DENDATZ020289D
申请日期
申请人
MICHAEL ZACK
发明人
分类号
H01J41/12
主分类号
H01J41/12
代理机构
代理人
主权项
地址
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