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发明名称
Perfectionnements apportés aux équerres de dessin et à leurs modes d'emploi
摘要
申请公布号
FR981857(A)
申请公布日期
1951.05.30
申请号
FRD981857
申请日期
1949.02.28
申请人
发明人
CORDANI ANGELO
分类号
B43L7/027
主分类号
B43L7/027
代理机构
代理人
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