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发明名称
MULTICUSTOMER PRIVATE BRANCH EXCHANGE
摘要
申请公布号
CA750015(A)
申请公布日期
1967.01.03
申请号
CAD750015
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
OSCAR H. WILLIFORD
分类号
主分类号
代理机构
代理人
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