Patents by Inventor Donald R. Barnhill

Donald R. Barnhill 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).

  • Pressure cooker closure fastening means
    Patent number: 4325491
    Abstract: A pressure cooker particularly adapted for use as a pressure fryer. The cooker's tank is electrically heated by a novel electrical resistance heater and heat reflector structure. The cooker also includes a novel cover and cover hold-down mechanism.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: April 20, 1982
    Assignee: B&W Metals Company, Inc.
    Inventor: Donald R. Barnhill
  • Pressure cooker
    Patent number: 4273991
    Abstract: A pressure cooker particularly adapted for use as a pressure fryer. The cooker's tank is electrically heated by a novel electrical resistance heater and heat reflector structure. The cooker also includes a novel cover and cover hold-down mechanism.
    Type: Grant
    Filed: November 29, 1979
    Date of Patent: June 16, 1981
    Assignee: B & W Metals Company, Inc.
    Inventor: Donald R. Barnhill
  • Combined rotating cafeteria type food service counter and cap
    Patent number: D263263
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: March 9, 1982
    Assignee: B & W Metals Company, Inc.
    Inventor: Donald R. Barnhill
  • Pressure cooker
    Patent number: D263305
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: March 9, 1982
    Assignee: B&W Metals Company, Inc.
    Inventor: Donald R. Barnhill
  • Combined rotating cafeteria type food service counter and display shelf
    Patent number: D264907
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: June 15, 1982
    Assignee: B&W Metals Company, Inc.
    Inventor: Donald R. Barnhill