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发明名称
Improvements in sound recording and reproducing machines
摘要
申请公布号
GB628838(A)
申请公布日期
1949.09.06
申请号
GB19460037239
申请日期
1946.12.18
申请人
BRYANS AEROQUIPMENT LIMITED;ALAN BRUFORD HARLAND
发明人
分类号
G11B25/02
主分类号
G11B25/02
代理机构
代理人
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