Patents by Inventor Fredrick Heebink

Fredrick Heebink 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).

  • Fireplace damper
    Patent number: 4007730
    Abstract: A damper designed to close the top of a fireplace chimney provided with a spring urging the same open and a second and stronger spring attaching the damper to a cable which extends down the chimney for purposes of opening and closing the damper, a lever being provided in the fireplace for locking the damper in either open or closed position, the damper being attached to the top of the chimney flue by means of an adjustable bracket.
    Type: Grant
    Filed: May 30, 1975
    Date of Patent: February 15, 1977
    Inventor: Fredrick Heebink