Patents by Inventor Stephen Longstaff

Stephen Longstaff 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).

  • Sanding sheet
    Patent number: D389388
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: January 20, 1998
    Assignee: Black & Decker Inc.
    Inventors: Stephen Longstaff, Michael Martin, Eric Cockburn, Colin Pugh
  • Sanding sheet
    Patent number: D409890
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: May 18, 1999
    Assignee: Black & Decker Inc.
    Inventors: Stephen Longstaff, Michael Martin, Eric Cockburn, Colin Pugh