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发明名称
COIN SIGNAL FOR TELEPHONE PAY STATIONS
摘要
申请公布号
CA518112(A)
申请公布日期
1955.11.01
申请号
CAD518112
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
LAWRENCE T. HOLDEN
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主分类号
代理机构
代理人
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