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发明名称
ZWEIFARBIGER KUGELSCHREIBER MIT PULSUHR.
摘要
申请公布号
DE1763764(U)
申请公布日期
1958.03.20
申请号
DE195800W8969U
申请日期
1958.02.03
申请人
WALTER WIEGAND
发明人
WALTER WIEGAND
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主分类号
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