Patents by Inventor David K. Haufe

David K. Haufe 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).

  • Housing for air circulating and treating appliance
    Patent number: D244856
    Type: Grant
    Filed: June 20, 1975
    Date of Patent: June 28, 1977
    Assignee: Sunbeam Corporation
    Inventors: David K. Haufe, Gordon Guth
  • Blender base
    Patent number: D246564
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: December 6, 1977
    Assignee: Sunbeam Corporation
    Inventor: David K. Haufe
  • Housing for a digital clock or the like
    Patent number: D256676
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: September 2, 1980
    Assignee: Sunbeam Corporation
    Inventor: David K. Haufe
  • Digital clock or the like
    Patent number: D261237
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: October 13, 1981
    Assignee: Sunbeam Corporation
    Inventor: David K. Haufe