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发明名称
Improvements in or relating to apparatus for the production of high vacuums
摘要
申请公布号
GB690649(A)
申请公布日期
1953.04.22
申请号
GB19510006947
申请日期
1951.03.22
申请人
ALOIS VOGT
发明人
分类号
F04F9/04
主分类号
F04F9/04
代理机构
代理人
主权项
地址
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