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发明名称
EXECUTIVE CONFERENCING SYSTEM
摘要
申请公布号
CA887331(A)
申请公布日期
1971.11.30
申请号
CAD887331
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
ROBERT D. BERRYMAN;JAMES R. MCEOWEN;GEORGE E. SALTUS
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主分类号
代理机构
代理人
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