Patents by Inventor Peter M. Borgran

Peter M. Borgran 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).

  • Device for extracting heat from a fireplace
    Patent number: 4122824
    Abstract: A device for extracting heat from a fireplace and directing it into a room including a U-shaped tubular member adapted to fit into the opening of fireplace the length of which is adjustable. The tubular member has an intake opening at one end and an exhaust conduit at the other end together with a fan for causing air to move through the member. The tubular member has a baffle inside thereof whereby air moving through the member is thoroughly warmed prior to its exit out the exhaust conduit.CROSS REFERENCEThis is a continuation of application Ser. No. 703,098, filed July 6, 1976, now abandoned.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: October 31, 1978
    Inventor: Peter M. Borgran