Patents by Inventor Jeffrey R. Killin

Jeffrey R. Killin 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).

  • Thermal damper for rectangular flue
    Patent number: 4361272
    Abstract: A thermally responsive damper for operation in a rectangular ventilation duct.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: November 30, 1982
    Assignee: Energy Vent, Inc.
    Inventors: John Prikkel, III, Dale R. Booher, Jeffrey R. Killin
  • Damper unit
    Patent number: D271615
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: November 29, 1983
    Assignee: Energy Vent, Inc.
    Inventors: John Prikkel, III, Dale R. Booher, Jeffrey R. Killin