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发明名称
Model railroad track construction
摘要
申请公布号
US2811315(A)
申请公布日期
1957.10.29
申请号
US19540449485
申请日期
1954.08.12
申请人
HIRTENSTEIN ROBERT E
发明人
HIRTENSTEIN ROBERT E.
分类号
A63H19/30
主分类号
A63H19/30
代理机构
代理人
主权项
地址
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