Patents by Inventor Stephen George Kieffer

Stephen George Kieffer 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).

  • Canopy shelter
    Patent number: D436669
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: January 23, 2001
    Assignee: Kieffer & Co., Inc.
    Inventor: Stephen George Kieffer
  • Semi-octopost extrusion
    Patent number: D448862
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: October 2, 2001
    Assignee: Kieffer & Co., Inc.
    Inventor: Stephen George Kieffer
  • Octopost extrusion
    Patent number: D515222
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: February 14, 2006
    Assignee: Kieffer & Co., Inc.
    Inventor: Stephen George Kieffer
  • Semi-octopost extrusion
    Patent number: D452915
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: January 8, 2002
    Assignee: Kieffer & Co., Inc.
    Inventor: Stephen George Kieffer
  • Canopy shelter
    Patent number: D435669
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: December 26, 2000
    Assignee: Kieffer & Co., Inc.
    Inventor: Stephen George Kieffer