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发明名称
MUSICAL TYPEWRITER
摘要
申请公布号
US3479918(A)
申请公布日期
1969.11.25
申请号
USD3479918
申请日期
1967.01.05
申请人
CHILD GUIDANCE TOYS INC.
发明人
ROBERT I. GENIN
分类号
G10D13/08;(IPC1-7):G10D13/08
主分类号
G10D13/08
代理机构
代理人
主权项
地址
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