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发明名称
Parking lot way control
摘要
申请公布号
US2581788(A)
申请公布日期
1952.01.08
申请号
US19460697582
申请日期
1946.09.17
申请人
DUNN FRED P
发明人
DUNN FRED P.
分类号
G07F17/14
主分类号
G07F17/14
代理机构
代理人
主权项
地址
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