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发明名称
Perfectionnements aux dispositifs de repérage, en particulier pour classeurs de fiches
摘要
申请公布号
FR940933(A)
申请公布日期
1948.12.28
申请号
FRD940933
申请日期
1945.10.03
申请人
发明人
WASSELL GEORGENE P.
分类号
B42F17/00
主分类号
B42F17/00
代理机构
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