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发明名称
REGISTRATION SYSTEM
摘要
申请公布号
CA463929(A)
申请公布日期
1950.03.21
申请号
CAD463929
申请日期
申请人
BELL TELEPHONE LABORATORIES;WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
PAUL MALLERY
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主分类号
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代理人
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