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发明名称
Frei tragende Wendeltreppe
摘要
申请公布号
DE1057771(B)
申请公布日期
1959.05.21
申请号
DE1956J011955
申请日期
1956.07.14
申请人
MATTHIAS JAKOBI
发明人
JAKOBI MATTHIAS
分类号
E04F11/032
主分类号
E04F11/032
代理机构
代理人
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