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发明名称
Perforated heat insulating wall brick - has larger slits near centre and more dividing cross-arms further out
摘要
申请公布号
DE3030848(A1)
申请公布日期
1982.03.11
申请号
DE19803030848
申请日期
1980.08.14
申请人
KELLERER,JOHANN
发明人
KELLERER,JOHANN
分类号
E04B2/14;(IPC1-7):04B1/08
主分类号
E04B2/14
代理机构
代理人
主权项
地址
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