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发明名称
Musical pegboard
摘要
申请公布号
US2624227(A)
申请公布日期
1953.01.06
申请号
US19490107213
申请日期
1949.07.28
申请人
SMITH PAUL G
发明人
SMITH PAUL G.
分类号
G09B15/00
主分类号
G09B15/00
代理机构
代理人
主权项
地址
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