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发明名称
Appareil à l'usage des dessinateurs pour le calcul et le tracé de toutes les lignes se rapportant aux dessins linéaires
摘要
申请公布号
FR814649(A)
申请公布日期
1937.06.26
申请号
FRD814649
申请日期
1936.12.07
申请人
发明人
MORIN JEAN
分类号
B43L7/00
主分类号
B43L7/00
代理机构
代理人
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