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发明名称
Magnetic writing board
摘要
申请公布号
US2868561(A)
申请公布日期
1959.01.13
申请号
US19560570861
申请日期
1956.03.12
申请人
SOCIETE D'ETUDES, DE GESTION ET D'EXPLOITATION DE BREVETS, S. E. G. E. B., J. BRANCHE & COMPAGNIE
发明人
BIANCHI GUISEPPINA;ROSE JEAN-PAUL
分类号
B41L3/08
主分类号
B41L3/08
代理机构
代理人
主权项
地址
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