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经营范围
发明名称
Optrækkelig Trappe.
摘要
申请公布号
DK53146(C)
申请公布日期
1937.05.31
申请号
DKD53146
申请日期
1935.07.13
申请人
HANS SIEBER
发明人
HANS SIEBER
分类号
主分类号
代理机构
代理人
主权项
地址
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