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发明名称
CONCENTRIC CONDUCTING SYSTEM
摘要
申请公布号
CA310476(A)
申请公布日期
1931.04.14
申请号
CAD310476
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
ESTILL IBBOTSON GREEN;HERMAN ANDREW AFFEL
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主分类号
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