发明名称 Telephone handset cord anti-twist accessory
摘要 The device is an accessory attachment which prevents twisting and entanglement of the commonly used helical extensible telephone cords which connect the telephone handset to the main telephone or base. The device is a somewhat flexible elongate member centrally positioned within the cord and attached to the opposite ends of the cord.
申请公布号 US4357500(A) 申请公布日期 1982.11.02
申请号 US19800191323 申请日期 1980.09.26
申请人 NILSEN, ROBERT J. 发明人 NILSEN, ROBERT J.
分类号 H04M1/15;(IPC1-7):H04M1/15;H01B7/06 主分类号 H04M1/15
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