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发明名称
Overhead-suspended car for race tracks
摘要
申请公布号
US2547715(A)
申请公布日期
1951.04.03
申请号
US19470763389
申请日期
1947.07.24
申请人
MASSEY ROBERT A
发明人
MASSEY ROBERT A.
分类号
B61B3/02
主分类号
B61B3/02
代理机构
代理人
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