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经营范围
发明名称
Improvements in or relating to electromagnetic driving units, particularly for mirror oscillographs
摘要
申请公布号
GB548767(A)
申请公布日期
1942.10.23
申请号
GB19410008711
申请日期
1941.07.10
申请人
ELECTRICAL RESEARCH PRODUCTS INC.
发明人
分类号
B64D15/04
主分类号
B64D15/04
代理机构
代理人
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地址
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