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发明名称
Improvements in or relating to sound-scanning rollers for sound film apparatus
摘要
申请公布号
GB464910(A)
申请公布日期
1937.04.27
申请号
GB19360031235
申请日期
1936.11.16
申请人
EUGEN BAUER G.M.B.H.
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
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