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发明名称
STUFENLEITER UND STUFENSTEHLEITER, DEREN STUFEN UND SICHERHEITSBRUECKEN AN DER AUFTRITTSEITE GERIFFELT SIND.
摘要
申请公布号
DE1751790(U)
申请公布日期
1957.09.05
申请号
DE195700L8226U
申请日期
1957.04.15
申请人
WILHELM LAYHER, HOLZWARENFABRIK
发明人
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主分类号
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