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发明名称
Color changing spinning toy
摘要
申请公布号
US2875553(A)
申请公布日期
1959.03.03
申请号
US19520310022
申请日期
1952.09.17
申请人
MORGAN DEVELOPMENT LABORATORIES, INC.
发明人
MORGAN PORTER S.
分类号
A63H1/22
主分类号
A63H1/22
代理机构
代理人
主权项
地址
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