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发明名称
Magnetic recording and analyzing of traffic observations
摘要
申请公布号
US3016189(A)
申请公布日期
1962.01.09
申请号
US19540462874
申请日期
1954.10.18
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
DEHN JOSEPH W.;VROOM EDWARD
分类号
H04M3/36
主分类号
H04M3/36
代理机构
代理人
主权项
地址
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