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发明名称
Electrical device
摘要
申请公布号
US2358406(A)
申请公布日期
1944.09.19
申请号
US19420439629
申请日期
1942.04.20
申请人
FRED LICHTGARN
发明人
LICHTGARN FRED
分类号
G01N27/12
主分类号
G01N27/12
代理机构
代理人
主权项
地址
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