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发明名称
Phonograph system
摘要
申请公布号
US2539515(A)
申请公布日期
1951.01.30
申请号
US19460697487
申请日期
1946.09.17
申请人
THOMAS A. EDISON, INCORPORATED
发明人
FOREST LOUIS Z. LA
分类号
H04M1/654
主分类号
H04M1/654
代理机构
代理人
主权项
地址
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