Patents by Inventor Christopher Slewinski

Christopher Slewinski 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).

  • Faceted diamond
    Patent number: D502887
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: March 15, 2005
    Assignee: Christopher Designs, Inc.
    Inventor: Christopher Slewinski
  • Gemstone design
    Patent number: D502888
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: March 15, 2005
    Assignee: Christopher Designs, Inc.
    Inventor: Christopher Slewinski