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发明名称
Combined track connector and indicator for toy railroads
摘要
申请公布号
US2690551(A)
申请公布日期
1954.09.28
申请号
US19510258674
申请日期
1951.11.28
申请人
THE LIONEL CORPORATION
发明人
PETTIT FRANK
分类号
A63H19/30
主分类号
A63H19/30
代理机构
代理人
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