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发明名称
Improvements in roundabouts
摘要
申请公布号
GB670150(A)
申请公布日期
1952.04.16
申请号
GB19490031631
申请日期
1949.12.09
申请人
H. P. JACKSON & SONS LIMITED;HERBERT PERCY JACKSON
发明人
分类号
A63G1/34
主分类号
A63G1/34
代理机构
代理人
主权项
地址
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