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经营范围
发明名称
TALKING LEARNING PUZZLE
摘要
申请公布号
US3554556(A)
申请公布日期
1971.01.12
申请号
USD3554556
申请日期
1969.03.05
申请人
MATTEL INC.
发明人
RALPH H. STEWART
分类号
G09B5/06;(IPC1-7):G11B25/04
主分类号
G09B5/06
代理机构
代理人
主权项
地址
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