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经营范围
发明名称
Vest pocket exposure meter
摘要
申请公布号
US2483945(A)
申请公布日期
1949.10.04
申请号
US19470771348
申请日期
1947.08.29
申请人
GENERAL ELECTRIC COMPANY
发明人
STIMSON ALLEN G.
分类号
G01J1/42
主分类号
G01J1/42
代理机构
代理人
主权项
地址
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