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发明名称
Sound recording adapter
摘要
申请公布号
US2683605(A)
申请公布日期
1954.07.13
申请号
US19500203046
申请日期
1950.12.28
申请人
THE GRAY MANUFACTURING COMPANY
发明人
FOSTER WILLIAM C.
分类号
G11B31/00
主分类号
G11B31/00
代理机构
代理人
主权项
地址
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