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发明名称
Music roll
摘要
申请公布号
US1761862(A)
申请公布日期
1930.06.03
申请号
US19260140620
申请日期
1926.10.09
申请人
PRICE BALL HENRY
发明人
BALL HENRY PRICE
分类号
G10F1/02;G10G3/02
主分类号
G10F1/02
代理机构
代理人
主权项
地址
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