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发明名称
ELECTRICAL ATTENUATION REDUCTION
摘要
申请公布号
CA323582(A)
申请公布日期
1932.06.21
申请号
CAD323582
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
LEON T. WILSON
分类号
主分类号
代理机构
代理人
主权项
地址
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