Patents Assigned to Exhart Enviromental Systems, Inc.
  • Electronic rodent repeller that mimics a chattering sound of a distressed rodent
    Patent number: 7948386
    Abstract: A rodent repeller having an audio signal generator configured to generate a chattering sound that mimics a distressed rodent. The audio signal generator produces a variable sound frequency to generate the chattering sound of distressed rodents.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: May 24, 2011
    Assignee: Exhart Enviromental Systems, Inc.
    Inventors: Isaac Weiser, Margaret Weiser, Albert M. Williams
  • Garden ball light novelty
    Patent number: D562488
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: February 19, 2008
    Assignee: Exhart Enviromental Systems, Inc.
    Inventor: Margaret Weiser