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经营范围
发明名称
TELEPHONE SERVICE REQUEST SCAN AND DIAL PULSE SCAN DEVICE
摘要
申请公布号
US3560655(A)
申请公布日期
1971.02.02
申请号
USD3560655
申请日期
1968.10.28
申请人
PIERRE M. LUCAS;JEAN F. DUQUESNE;CHARLES E. ABRAHAM
发明人
PIERRE M. LUCAS;JEAN F. DUQUESNE;CHARLES E. ABRAHAM
分类号
H04Q3/545;(IPC1-7):H04M3/22;H04Q3/54
主分类号
H04Q3/545
代理机构
代理人
主权项
地址
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