Patents Assigned to Andover Monitoring Systems Corporation
  • Time/temperature indicator
    Patent number: 4488822
    Abstract: This invention is directed to a time/temperature indicator wherein a fluid is frozen in one compartment and subjected to the pressure of a compressible fluid through a flow control device. When the frozen fluid melts, it is forced from its compartment and the time/temperature indicator at a control rate by the compressible fluid acting through the flow controlled device.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: December 18, 1984
    Assignee: Andover Monitoring Systems Corporation
    Inventor: Timothy A. Brennan