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发明名称
Apparatus for indicating the presence of inflammable vapors or gases
摘要
申请公布号
US2201055(A)
申请公布日期
1940.05.14
申请号
US19370156003
申请日期
1937.07.27
申请人
THOMAS RINGROSE HENRY
发明人
RINGROSE HENRY THOMAS
分类号
G01N7/12
主分类号
G01N7/12
代理机构
代理人
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