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经营范围
发明名称
Talking machine
摘要
申请公布号
US1837642(A)
申请公布日期
1931.12.22
申请号
US19300419366
申请日期
1930.01.08
申请人
NAOJIRO YAMANAKA
发明人
YAMANAKA NAOJIRO
分类号
G11B25/04
主分类号
G11B25/04
代理机构
代理人
主权项
地址
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