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发明名称
Electrical indicating apparatus
摘要
申请公布号
US2052539(A)
申请公布日期
1936.08.25
申请号
US19280258219
申请日期
1928.03.01
申请人
THE TELEREGISTER CORPORATION
发明人
FRISCHKNECHT ERNEST;ABEGGLEN JEAN
分类号
H04L12/18
主分类号
H04L12/18
代理机构
代理人
主权项
地址
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