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经营范围
发明名称
Intercommunicating system
摘要
申请公布号
US2515726(A)
申请公布日期
1950.07.18
申请号
US19450618351
申请日期
1945.09.24
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
MONTANI ANGELO
分类号
H04M9/08
主分类号
H04M9/08
代理机构
代理人
主权项
地址
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