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发明名称
Method and apparatus for handling urban shopper traffic
摘要
申请公布号
US3405612(A)
申请公布日期
1968.10.15
申请号
US19660597172
申请日期
1966.11.25
申请人
JOHN H. PEARSON
发明人
PEARSON JOHN H.
分类号
E01C1/00
主分类号
E01C1/00
代理机构
代理人
主权项
地址
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