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经营范围
发明名称
Light amplifying device
摘要
申请公布号
GB749798(A)
申请公布日期
1956.05.30
申请号
GB19540000120
申请日期
1954.01.04
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H01L31/14
主分类号
H01L31/14
代理机构
代理人
主权项
地址
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