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发明名称
Improvements in and relating to sound recording and reproducing apparatus
摘要
申请公布号
GB556799(A)
申请公布日期
1943.10.22
申请号
GB19420000372
申请日期
1942.01.09
申请人
W.A.F. COMPANY LIMITED;HENRY HANS ALLEN
发明人
分类号
G11B27/13
主分类号
G11B27/13
代理机构
代理人
主权项
地址
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