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发明名称
Dispositif d'entraînement de ruban souple en particulier de film sonore
摘要
申请公布号
FR920248(A)
申请公布日期
1947.04.01
申请号
FRD920248
申请日期
1946.01.16
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
主分类号
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