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发明名称
Improvements in or relating to mercury and like metal vapour pumps
摘要
申请公布号
GB301905(A)
申请公布日期
1930.01.23
申请号
GB19280034931
申请日期
1928.11.27
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
F04F9/00
主分类号
F04F9/00
代理机构
代理人
主权项
地址
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