Patents by Inventor William C. Kalkwarf

William C. Kalkwarf 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).

  • STORAGE CASE WITH INTERNAL FRAME
    Publication number: 20080129158
    Abstract: A storage case includes a U-shaped structural frame that forms three closed sides of the case. Decorative panels are fastened to the frame to form exterior surfaces of the case.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 5, 2008
    Applicant: MASTER LOCK COMPANY LLC
    Inventor: William C. KALKWARF
  • Chest
    Patent number: D574629
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: August 12, 2008
    Assignee: Master Lock Company LLC
    Inventor: William C. Kalkwarf
  • Chest and cabinet
    Patent number: D587047
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: February 24, 2009
    Assignee: Master Lock Company LLC
    Inventor: William C. Kalkwarf
  • Cabinet
    Patent number: D588849
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: March 24, 2009
    Assignee: Master Lock Company LLC
    Inventor: William C. Kalkwarf