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发明名称
Fiches et fichier rendant les erreurs de classement visibles
摘要
申请公布号
FR831999(A)
申请公布日期
1938.09.16
申请号
FRD831999
申请日期
1938.01.12
申请人
发明人
ANDRE GARDIN;EUGENE FLAHAUT RENE,
分类号
B42F19/00
主分类号
B42F19/00
代理机构
代理人
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