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经营范围
发明名称
Improvements in and relating to eudiometric apparatus especially to those for measuring firedamp
摘要
申请公布号
GB357017(A)
申请公布日期
1931.09.17
申请号
GB19300035879
申请日期
1930.11.28
申请人
JULES GASTON DALOZ
发明人
分类号
G01N7/06
主分类号
G01N7/06
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代理人
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