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发明名称
Mechanical hobbyhorse
摘要
申请公布号
US2634975(A)
申请公布日期
1953.04.14
申请号
US19510242653
申请日期
1951.08.20
申请人
OTTO HAHS JAMES
发明人
HAHS JAMES OTTO
分类号
A63G19/20
主分类号
A63G19/20
代理机构
代理人
主权项
地址
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