Patents by Inventor John Ronvik

John Ronvik has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Control box cover for a water heater
    Patent number: D436081
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: January 9, 2001
    Inventors: Barry N. Jackson, Gary W. Gauer, John Ronvik
  • Junction box cover for a water heater
    Patent number: D437922
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: February 20, 2001
    Inventors: Barry N. Jackson, Gary W. Gauer, John Ronvik
  • Water heater top
    Patent number: D440287
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: April 10, 2001
    Inventors: Barry N. Jackson, Gary W. Gauer, John Ronvik
  • Water heater tank
    Patent number: D421107
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: February 22, 2000
    Inventors: Barry Neild Jackson, Gary W. Gauer, John Ronvik