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发明名称
Projecteur pour films sonores
摘要
申请公布号
FR786358(A)
申请公布日期
1935.09.02
申请号
FRD786358
申请日期
1935.02.13
申请人
I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT
发明人
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主分类号
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