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发明名称
Indicating system
摘要
申请公布号
US2355352(A)
申请公布日期
1944.08.08
申请号
US19420441118
申请日期
1942.04.30
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
OWEN WM. WALTER
分类号
G08G5/00
主分类号
G08G5/00
代理机构
代理人
主权项
地址
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