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发明名称
Treppenartige Wasserrinne fuer Boeschungen
摘要
申请公布号
DE499035(C)
申请公布日期
1930.05.31
申请号
DENDATK105386D
申请日期
申请人
OTTO KRUEGER
发明人
分类号
E01C11/22
主分类号
E01C11/22
代理机构
代理人
主权项
地址
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