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发明名称
TELEGRAPH EXCHANGE SYSTEM
摘要
申请公布号
CA344462(A)
申请公布日期
1934.09.04
申请号
CAD344462
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
GEORGE ARTHUR LOCKE;FULLERTON STEWART KINKEAD
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主分类号
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代理人
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