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发明名称
Improvements in or relating to devices for determining very low gas pressures
摘要
申请公布号
GB834470(A)
申请公布日期
1960.05.11
申请号
GB19570012928
申请日期
1957.04.23
申请人
PHILIPS ELECTRICAL INDUSTRIES LIMITED
发明人
分类号
G01L21/00;H01J41/04
主分类号
G01L21/00
代理机构
代理人
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