Patents Examined by Joseph E. Nowick
  • Method and apparatus for the promotion of selected harmonic response signals in an article detection system
    Patent number: 4326198
    Abstract: An electromagnetic article detection system of the type wherein a saturable magnetic target generates harmonics of an alternating magnetic interrogation field. A magnetic bias means is provided along with the magnetic interrogation field to promote the production of target response particularly at even harmonics, throughout the interrogation region.
    Type: Grant
    Filed: August 18, 1976
    Date of Patent: April 20, 1982
    Assignee: Knogo Corporation
    Inventor: Eugene B. Novikoff