Patents Assigned to Mardix, Inc.
  • Method and apparatus for controlling the passage of persons and objects between two areas
    Patent number: 4006459
    Abstract: A security method for controlling the passage of persons and objects between two areas, this method employs a controlled space. Prior to admitting, during the presence and subsequent to exiting of a person to this space, the contents of the space are monitored and examined.
    Type: Grant
    Filed: May 25, 1973
    Date of Patent: February 1, 1977
    Assignee: Mardix, Inc.
    Inventors: Richard H. Baker, Richard C. Hix