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经营范围
发明名称
Signaling system
摘要
申请公布号
US1846218(A)
申请公布日期
1932.02.23
申请号
US19260090251
申请日期
1926.02.24
申请人
ASSOCIATED ELECTRIC LABORATORIES, INC.
发明人
LOMAX CLARENCE E.
分类号
G08B17/06
主分类号
G08B17/06
代理机构
代理人
主权项
地址
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