Patents by Inventor Lawrence M. Knutson

Lawrence M. Knutson 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).

  • Bowl
    Patent number: D263668
    Type: Grant
    Filed: January 31, 1978
    Date of Patent: April 6, 1982
    Assignee: Decra-Stone, Inc.
    Inventor: Lawrence M. Knutson
  • Scalloped bowl
    Patent number: D271651
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: December 6, 1983
    Assignee: Decra Stone, Inc.
    Inventor: Lawrence M. Knutson
  • Food bowl
    Patent number: D271835
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: December 20, 1983
    Assignee: Decra Stone, Inc.
    Inventor: Lawrence M. Knutson
  • Food bowl
    Patent number: D273927
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: May 22, 1984
    Assignee: Decra Stone, Inc.
    Inventor: Lawrence M. Knutson
  • Bowl
    Patent number: D278588
    Type: Grant
    Filed: June 17, 1982
    Date of Patent: April 30, 1985
    Assignee: Decra-Stone, Inc.
    Inventor: Lawrence M. Knutson
  • Bowl
    Patent number: D280482
    Type: Grant
    Filed: June 17, 1982
    Date of Patent: September 10, 1985
    Assignee: Decra-Stone, Inc.
    Inventor: Lawrence M. Knutson
  • Bowl
    Patent number: D280689
    Type: Grant
    Filed: June 17, 1982
    Date of Patent: September 24, 1985
    Assignee: Decra-Stone, Inc.
    Inventor: Lawrence M. Knutson
  • Eight sided container
    Patent number: D586124
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: February 10, 2009
    Assignee: Decra Stone, Inc.
    Inventors: Lawrence M. Knutson, Richard L. Knutson, Sheryl F. Knutson
  • Eight sided food container
    Patent number: D597310
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 4, 2009
    Assignee: Decra Stone, Inc.
    Inventors: Lawrence M. Knutson, Richard L. Knutson, Sheryl F. Knutson
  • Seven sided food container
    Patent number: D597311
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 4, 2009
    Assignee: Decra Stone, Inc.
    Inventors: Lawrence M. Knutson, Richard L. Knutson, Sheryl F. Knutson
  • Six sided food container
    Patent number: D597739
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 11, 2009
    Assignee: Decra Stone, Inc.
    Inventors: Lawrence M. Knutson, Richard L. Knutson, Sheryl F. Knutson