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摘要
申请公布号
US2747731(A)
申请公布日期
1956.05.29
申请号
US19520317211
申请日期
1952.10.28
申请人
THE LIONEL CORPORATION
发明人
BONANNO JOSEPH L.
分类号
A63H19/24
主分类号
A63H19/24
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