Patents Assigned to Enverflow Ltd.
  • Drainage device
    Patent number: 7891907
    Abstract: Drainage device having an inlet having at least three substantially straight sides with rounded corners linking the at least three substantially straight sides. The sides and corners taper to form a circular outlet. The rounded corners are upper edges of channels of the device, and the channels are depressions in the sides.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: February 22, 2011
    Assignee: Enverflow Ltd.
    Inventor: John Anthony Smith