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发明名称
Wechselschreibstift
摘要
申请公布号
DE1244617(B)
申请公布日期
1967.07.13
申请号
DE1962N021146
申请日期
1962.02.01
申请人
WALTER NAEGELE
发明人
NAEGELE WALTER
分类号
B43K24/12
主分类号
B43K24/12
代理机构
代理人
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