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发明名称
Photoelectric web controlled sound reproducer
摘要
申请公布号
US2534715(A)
申请公布日期
1950.12.19
申请号
US19470734627
申请日期
1947.03.14
申请人
LOVAAS PNTORPRISES, INC.
发明人
HORTON WILLIAM E.
分类号
G11B7/00;G11B15/16
主分类号
G11B7/00
代理机构
代理人
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