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发明名称
Escalier en e plaques et procédé pour sa fabrication
摘要
申请公布号
FR937643(A)
申请公布日期
1948.08.23
申请号
FRD937643
申请日期
1946.12.24
申请人
KERAMOS A. G.
发明人
分类号
E04F11/116
主分类号
E04F11/116
代理机构
代理人
主权项
地址
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