Patents by Inventor Michael Heimgartner

Michael Heimgartner 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).

  • Ball valve
    Patent number: D455474
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: April 9, 2002
    Assignee: Georg Fischer Rohrleitungssysteme AG
    Inventors: Stephen Knobel, Michael Heimgartner