Patents by Inventor Walter W. Stefanski

Walter W. Stefanski 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).

  • Hand stamp
    Patent number: D444808
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: July 10, 2001
    Assignee: M&R Marking Systems, Inc.
    Inventors: Frederick W. Dour, Walter W. Stefanski, Steven J. Sculler, Michael P. Zambelli
  • Hand stamp case
    Patent number: D477628
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: July 22, 2003
    Assignee: M&R Marking Systems, Inc.
    Inventors: Michael P. Zambelli, Frederick W. Dour, Steven J. Sculler, Anthony D. MacNeil, Walter W. Stefanski
  • Hand stamp and storage cap
    Patent number: D478930
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: August 26, 2003
    Assignee: M&R Marking Systems, Inc.
    Inventors: Michael P. Zambelli, Frederick W. Dour, Steven J. Sculler, Anthony D. MacNeil, Walter W. Stefanski
  • Seal press
    Patent number: D480103
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: September 30, 2003
    Assignee: M&R Marking Systems, Inc.
    Inventors: Walter W. Stefanski, Steven J. Sculler
  • Hand stamp
    Patent number: D493191
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: July 20, 2004
    Assignee: M&R Marking Systems, Inc.
    Inventors: Steven J. Sculler, Anthony D. MacNeil, Walter W. Stefanski
  • Hand stamp
    Patent number: D493192
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: July 20, 2004
    Assignee: M&R Marking Systems, Inc.
    Inventors: Steven J. Sculler, Anthony D. MacNeil, Walter W. Stefanski
  • Self-inking stamp
    Patent number: D387799
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: December 16, 1997
    Assignee: M&R Marking Systems, Inc.
    Inventors: Sean P. Daw, Michael D. Bailey, John R. Laverack, Frederick W. Dour, Steven J. Sculler, Walter W. Stefanski
  • Ink pad holder
    Patent number: D387800
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: December 16, 1997
    Assignee: M&R Marking Systems, Inc.
    Inventors: Sean P. Daw, Michael D. Bailey, John R. Laverack, Frederick W. Dour, Steven J. Sculler, Walter W. Stefanski