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发明名称
Telephone or like signaling system
摘要
申请公布号
US2407150(A)
申请公布日期
1946.09.03
申请号
US19430502884
申请日期
1943.09.18
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
GILLINGS CHARLES;BEALE CHARLES EDMUND;TERRONI TESEO BRUNO DANTE
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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