发明名称 Theft detection apparatus and target and method of making same
摘要 Items of merchandise (30) are protected from shoplifting or theft by affixing to them, special responder targets (32), which are formed by drawing a material of high magnetic permeability into a thin wire, then heat treating the wire to substantially increase its magnetic permeability and thereafter severing the wire into individual lengths. Several wires (32a, 32b and 32c) may be positioned on a common adhesively coated base strip (42) and covered by a peel strip (46) and wire like deactivation elements (48) of hard magnetic material may be positioned adjacent the wires for deactivating them.
申请公布号 US4568921(A) 申请公布日期 1986.02.04
申请号 US19840630708 申请日期 1984.07.13
申请人 KNOGO CORPORATION 发明人 POKALSKY, PETER A.
分类号 G08B13/24;(IPC1-7):G08B13/24 主分类号 G08B13/24
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