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发明名称
Verfahren zur Herstellung einer nicht zu brennenden Kunstmasse fuer Griffel
摘要
申请公布号
DE643084(C)
申请公布日期
1937.03.24
申请号
DE1933B160763D
申请日期
1933.05.05
申请人
FRIEDRICH BUECHNER
发明人
分类号
B43K19/12
主分类号
B43K19/12
代理机构
代理人
主权项
地址
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