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发明名称
Signaling system and apparatus
摘要
申请公布号
US2053110(A)
申请公布日期
1936.09.01
申请号
US19320638929
申请日期
1932.10.21
申请人
GENERAL ELECTRIC COMPANY
发明人
REGAN MARGARET W.
分类号
G08G1/085
主分类号
G08G1/085
代理机构
代理人
主权项
地址
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