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发明名称
FERTIGTEILE ZUR HERSTELLUNG EINER BETONTREPPE.
摘要
申请公布号
DE1722433(U)
申请公布日期
1956.05.17
申请号
DE195500R1890U
申请日期
1955.12.09
申请人
ROBERT RICHTER
发明人
ROBERT RICHTER
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主分类号
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