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发明名称
TRAFFIC DETECTOR
摘要
申请公布号
CA402383(A)
申请公布日期
1942.01.20
申请号
CAD402383
申请日期
申请人
NORTHERN ELECTRIC COMPANY;AUTOMATIC SIGNAL CORPORATION
发明人
JOHN L. BARKER
分类号
主分类号
代理机构
代理人
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