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发明名称
Dispositif d'escamotage de la règle des planches à dessin ordinaires et montage d'une règle munie de ce dispositif sur les planches équipées d'un appareil à dessiner
摘要
申请公布号
FR55728(E)
申请公布日期
1952.09.04
申请号
FRD55728
申请日期
1944.03.20
申请人
发明人
BERTHUOT MAURICE;AUGE ROBERT
分类号
B43L13/04
主分类号
B43L13/04
代理机构
代理人
主权项
地址
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