发明名称 Keyed poroton/cellular concrete brick has keyway provided at top and bottom so that during working the bricks can be accurately placed by connecting key
摘要 <p>During the manufacture of the poroton/cellular concrete brick a keyway is provided at the top and bottom so that during working the bricks can be accurately placed by a connecting key.</p>
申请公布号 DE20300585(U1) 申请公布日期 2003.04.30
申请号 DE2003200585U 申请日期 2003.01.15
申请人 OTTE, HERBERT 发明人
分类号 E04B2/02;E04B2/06;(IPC1-7):E04C1/00 主分类号 E04B2/02
代理机构 代理人
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