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发明名称
Occupant propelled roundabout
摘要
申请公布号
US2548228(A)
申请公布日期
1951.04.10
申请号
US19470786410
申请日期
1947.11.17
申请人
MCCRAY DONALD C
发明人
MCCRAY DONALD C.
分类号
A63G1/14
主分类号
A63G1/14
代理机构
代理人
主权项
地址
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