Patents by Inventor Erik Hagenstad

Erik Hagenstad 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).

  • Magnetic glass vessel cleaner
    Patent number: D745235
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: December 8, 2015
    Inventor: Erik Hagenstad
  • Magnetic glass vessel cleaner
    Patent number: D745236
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: December 8, 2015
    Inventor: Erik Hagenstad
  • Cleaning tablet
    Patent number: D796737
    Type: Grant
    Filed: February 6, 2016
    Date of Patent: September 5, 2017
    Inventor: Erik Hagenstad
  • Scrub brush
    Patent number: D817005
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: May 8, 2018
    Inventor: Erik Hagenstad