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经营范围
发明名称
Sound recording apparatus
摘要
申请公布号
US2537214(A)
申请公布日期
1951.01.09
申请号
US19480019106
申请日期
1948.04.05
申请人
ALEXANDER E. DI GHILINI;L. ELSTON DI GHILINI;LEO W. PETROFF
发明人
GHILINI ALEXANDER E. DI;GHILINI LEO E. DI
分类号
G11B3/36
主分类号
G11B3/36
代理机构
代理人
主权项
地址
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