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发明名称
Improvements in or relating to apparatus for guiding films in sound film apparatus with spring mounted roller
摘要
申请公布号
GB486812(A)
申请公布日期
1938.06.10
申请号
GB19370010229
申请日期
1937.04.09
申请人
KLANGFILM G.M.B.H.
发明人
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