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发明名称
Electrical signaling system
摘要
申请公布号
US2588767(A)
申请公布日期
1952.03.11
申请号
US19460660333
申请日期
1946.04.08
申请人
AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED
发明人
ROSEBY PHILIP NORTON
分类号
H02J13/00
主分类号
H02J13/00
代理机构
代理人
主权项
地址
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