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经营范围
发明名称
Smoke detector
摘要
申请公布号
US2288143(A)
申请公布日期
1942.06.30
申请号
US19410384417
申请日期
1941.03.20
申请人
SHEPPARD CREEDY C
发明人
SHEPPARD CREEDY C.
分类号
G01N21/29
主分类号
G01N21/29
代理机构
代理人
主权项
地址
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