发明名称 DOOR GUARD AND INTRUDER ALARM
摘要 <p>This door guard acts to prevent a door being forceably opened inwardly into a room. It consists of a removable brace attached to the door at the top by a bracket, and to the floor or door frame at the bottom by an adjustable linkage. If the door moves slightly in the entry attempt the door guard emits an audible warning signal. The guard can be used in a portable mode for other doors.</p>
申请公布号 CA1096006(A) 申请公布日期 1981.02.17
申请号 CA19790335749 申请日期 1979.09.17
申请人 LANDON, TRUMAN B., 445 EAST MILE ROAD, LONDON, ONT. N6H 3K4 发明人 LANDON, TRUMAN B., 445 EAST MILE ROAD, LONDON, ONT. N6H 3K4
分类号 E05B45/00;E05C19/00;(IPC1-7):08B13/08 主分类号 E05B45/00
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