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经营范围
发明名称
Detection of hydrocarbons
摘要
申请公布号
US2800460(A)
申请公布日期
1957.07.23
申请号
US19540477917
申请日期
1954.12.27
申请人
DR. OTTO HEINRICH DRAGER
发明人
GROSSKOPF KARL
分类号
G01N31/22
主分类号
G01N31/22
代理机构
代理人
主权项
地址
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