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经营范围
发明名称
Gas detector
摘要
申请公布号
US2200523(A)
申请公布日期
1940.05.14
申请号
US19380228899
申请日期
1938.09.08
申请人
THE PREST-O-LITE COMPANY, INC.
发明人
TUEL WILLIAM G.
分类号
G01N21/72
主分类号
G01N21/72
代理机构
代理人
主权项
地址
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