Patents by Inventor Steven E. Armbruster

Steven E. Armbruster 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).

  • Stud welding unit
    Patent number: D454578
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: March 19, 2002
    Assignee: Nelson Stud Welding, Inc.
    Inventors: Steven E. Armbruster, Christopher S. Landek-Riker
  • Stud welding user interface
    Patent number: D455448
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: April 9, 2002
    Assignee: Nelson Stud Welding, Inc.
    Inventors: Steven E. Armbruster, Christopher S. Landek-Riker