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经营范围
发明名称
DIAL SELECTIVE INTERCOMMUNICATION SYSTEM
摘要
申请公布号
US3450845(A)
申请公布日期
1969.06.17
申请号
USD3450845
申请日期
1965.09.29
申请人
BELL TELEPHONE LAB. INC.
发明人
CHARLES E. MORSE
分类号
H04M9/00;(IPC1-7):H04M1/00
主分类号
H04M9/00
代理机构
代理人
主权项
地址
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