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发明名称
AUTOMATIC TELEPHONE EXCHANGES
摘要
申请公布号
CA534838(A)
申请公布日期
1956.12.25
申请号
CAD534838
申请日期
申请人
THE GENERAL ELECTRIC COMPANY LIMITED
发明人
RONALD MAWSON;ALEXANDER A. CHUBB;MAURICE M. LEVY
分类号
主分类号
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