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发明名称
Perfectionnements aux instruments d'écriture
摘要
申请公布号
FR987190(A)
申请公布日期
1951.08.09
申请号
FRD987190
申请日期
1949.05.21
申请人
BIRO PATENTE A. G.
发明人
分类号
B43K7/02
主分类号
B43K7/02
代理机构
代理人
主权项
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