Patents Assigned to Permasign Limited
  • Security device
    Patent number: 5644295
    Abstract: The present invention relates to a security device for fixing to a surface to allow relative movement of the device and the surface to be detected, and a connector for such a device.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: July 1, 1997
    Assignee: Permasign Limited
    Inventors: Raymond Edwin Connolly, Jonathan James Whittington Griffiths