发明名称 Magnetic safety chain holder
摘要 A magnetic chain and bolt holder for a chain door guard, to prevent swinging thereof into damaging interference between the door and door casing, and comprised of a magnet plate positioned on the door casing at the terminal end of the chain when hanging by gravity for automatic securement thereof.
申请公布号 US4749218(A) 申请公布日期 1988.06.07
申请号 US19870061466 申请日期 1987.06.15
申请人 JORDAN, RICHARD L.;LAZAR, DORIS M. 发明人 JORDAN, RICHARD L.;LAZAR, DORIS M.
分类号 E05C17/36;(IPC1-7):E05C17/36 主分类号 E05C17/36
代理机构 代理人
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