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发明名称
Improvements in electrical devices for determining the degree of vacuum in vacuum insulations
摘要
申请公布号
GB479184(A)
申请公布日期
1938.02.01
申请号
GB19370016749
申请日期
1937.06.16
申请人
AKTIEBOLAGET TERMISK ISOLATION
发明人
分类号
G01L21/00
主分类号
G01L21/00
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