Theft-detection system for library use including a plurality of hall cells
作者： Bernard M Goldsmith , Ernest Donald Belanger , Harold S Pike
DOI:
关键词:
摘要:
lens.org 参考文章(3)
Emmanuel M Trikilis, System and method for preventing pilferage by detection of magnetic fields ,(1964)
Fowler Alexander, De-magnetizer for magnetic feed system ,(1953)
Puy Richard R Du, Magnetizing and demagnetizing apparatus ,(1962)