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经营范围
发明名称
Occupant propelled roundabout
摘要
申请公布号
US2751225(A)
申请公布日期
1956.06.19
申请号
US19530392540
申请日期
1953.11.17
申请人
HOWELL HELENA B
发明人
HOWELL HELENA B.
分类号
A63G1/20
主分类号
A63G1/20
代理机构
代理人
主权项
地址
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