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经营范围
发明名称
Sound recording and reproducing mechanism
摘要
申请公布号
US2085162(A)
申请公布日期
1937.06.29
申请号
US19340705314
申请日期
1934.01.05
申请人
LARNER CHESTER W
发明人
LARNER CHESTER W.
分类号
G11B19/265
主分类号
G11B19/265
代理机构
代理人
主权项
地址
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