发明名称 Fire proof safety door handles
摘要 The handles are reinforced by an extension of the steel shafts which form the connecting shafts between the two halves so that should the synthetic covering is removed by the heat, the handle has sufficient grip remaining to provide a sure opening of the door. The handles suitably have a nylon insert ring.
申请公布号 DE1907191(A1) 申请公布日期 1970.09.03
申请号 DE19691907191 申请日期 1969.02.13
申请人 WILKE,HEINRICH;WILKE,DIPL.-WIRTSCH.-ING. RUDOLF 发明人 WILKE,HEINRICH;RUDOLF WILKE,DIPL.-WIRTSCH.-ING.
分类号 E05B1/00 主分类号 E05B1/00
代理机构 代理人
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