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发明名称
Kääntöporras
摘要
申请公布号
FI96530(C)
申请公布日期
1996.07.10
申请号
FI19890004706
申请日期
1989.10.04
申请人
RIIHIMAEKI,JUHA
发明人
RIIHIMAEKI,JUHA
分类号
E04F11/02;E04F11/025;(IPC1-7):E04F11/02;E04F11/10
主分类号
E04F11/02
代理机构
代理人
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地址
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