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经营范围
发明名称
Gas detector
摘要
申请公布号
US2236525(A)
申请公布日期
1941.04.01
申请号
US19390306342
申请日期
1939.11.27
申请人
DAVIS ROBERT E
发明人
DAVIS ROBERT E.
分类号
G01N33/00
主分类号
G01N33/00
代理机构
代理人
主权项
地址
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