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发明名称
MAGNETISCHE HUELSE.
摘要
申请公布号
DE1711988(U)
申请公布日期
1955.12.01
申请号
DE195500L4100U
申请日期
1955.08.27
申请人
JOHANN FROESCHEIS, LYRA-BLEISTIFT-FABRIK
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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