Patents Assigned to G. S. Phillips
  • Mercury manometer
    Patent number: 4782704
    Abstract: This invention relates to mercury manometers for a purge bubbler liquid level control system or the like. More particularly, this invention relates to mercury manometers comprising a mercury column with electrical contacts imbedded in the walls of the column for sensing specific liquid levels.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: November 8, 1988
    Assignee: G. S. Phillips
    Inventor: John Webb