Patents by Inventor John F. Krieger

John F. Krieger 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).

  • Mug
    Patent number: D249918
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: October 17, 1978
    Assignee: Robert S. Block
    Inventors: Robert S. Block, John F. Krieger
  • Tray
    Patent number: D251228
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: March 6, 1979
    Assignee: Robert S. Block
    Inventors: Robert S. Block, John F. Krieger
  • Mug
    Patent number: D255200
    Type: Grant
    Filed: September 8, 1978
    Date of Patent: June 3, 1980
    Assignee: Robert S. Block, by John F. Krieger
    Inventors: Robert S. Block, John F. Krieger