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发明名称
Improvements in or relating to the recording of sound by optical apparatus
摘要
申请公布号
GB383883(A)
申请公布日期
1932.11.24
申请号
GB19320012464
申请日期
1932.04.30
申请人
ALBAN JOSEPH ROBERTS;ARTHUR STANLEY PREIST
发明人
分类号
G11B7/00
主分类号
G11B7/00
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