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发明名称
Perfectionnements aux plumes à écrire
摘要
申请公布号
FR851698(A)
申请公布日期
1940.01.12
申请号
FRD851698
申请日期
1939.03.15
申请人
W. C. HERAEUS GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
发明人
分类号
B43K1/00;C22C5/00;C22C5/06;C22C30/00
主分类号
B43K1/00
代理机构
代理人
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