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发明名称
Improvements in illuminating devices for apparatus reproducing sounds the oscillation curves of which are recorded on a non-transparent layer carrier
摘要
申请公布号
GB389070(A)
申请公布日期
1933.03.09
申请号
GB19310016152
申请日期
1931.06.04
申请人
CARL ZEISS
发明人
分类号
B65D41/42;G11B7/00
主分类号
B65D41/42
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代理人
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