Patents by Inventor Ralph Pietruska

Ralph Pietruska 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).

  • Dishwasher
    Patent number: D554305
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: October 30, 2007
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventor: Ralph Pietruska
  • Dishwasher
    Patent number: D559477
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: January 8, 2008
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventor: Ralph Pietruska