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发明名称
Electric phonograph
摘要
申请公布号
US1915906(A)
申请公布日期
1933.06.27
申请号
US19310537858
申请日期
1931.05.16
申请人
THOMAS ADOLPH A
发明人
THOMAS ADOLPH A.
分类号
G11B3/32;G11B17/00;G11B25/04
主分类号
G11B3/32
代理机构
代理人
主权项
地址
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