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发明名称
Improvements in or relating to apparatus for indicating the presence of inflammable vapours or gases
摘要
申请公布号
GB331711(A)
申请公布日期
1930.07.10
申请号
GB19290022684
申请日期
1929.07.24
申请人
HENRY THOMAS RINGROSE
发明人
分类号
G01N7/12
主分类号
G01N7/12
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