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发明名称
Compteur de minutes d'encombrement réduit et sa combinaison notamment avec tous crayons ou porte-plumes
摘要
申请公布号
FR839257(A)
申请公布日期
1939.03.30
申请号
FRD839257
申请日期
1938.06.14
申请人
发明人
MARTIN CHARLES
分类号
B43K29/087;G04B47/00;G04F3/02
主分类号
B43K29/087
代理机构
代理人
主权项
地址
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