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经营范围
发明名称
Verfahren zur Erhöhung der Lichtdichte von Mineabstrichen.
摘要
申请公布号
CH205614(A)
申请公布日期
1939.06.30
申请号
CHD205614
申请日期
1937.06.07
申请人
A. W. FABER CASTELL-BLEISTIFT-FABRIK A. G.
发明人
A. W. FABER CASTELL-BLEISTIFT-FABRIK A. G.
分类号
B43K19/18
主分类号
B43K19/18
代理机构
代理人
主权项
地址
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