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经营范围
发明名称
Magneto-optisches Lichtrelais
摘要
申请公布号
DE557667(C)
申请公布日期
1932.08.26
申请号
DE1929E039486D
申请日期
1929.06.29
申请人
ELECTRICAL RESEARCH PRODUCTS INC.
发明人
分类号
G02F1/09
主分类号
G02F1/09
代理机构
代理人
主权项
地址
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