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发明名称
Educational amusement device
摘要
申请公布号
US2811356(A)
申请公布日期
1957.10.29
申请号
US19530380173
申请日期
1953.09.15
申请人
JAMES REED
发明人
REED JAMES
分类号
A63H33/26
主分类号
A63H33/26
代理机构
代理人
主权项
地址
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