Patents by Inventor Peter E. Zdenek

Peter E. Zdenek 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).

  • Furnace heat exchanger
    Patent number: 5060722
    Abstract: A serpentine passage for a gas furnace clam shell-type heat exchanger comprising a serpentine passage having an inlet and an outlet where the serpentine passage, from the outlet toward the inlet, is shaped as a leaning, cursive w with the trailing end curling downwardly and underlining the w.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: October 29, 1991
    Assignee: American Standard, Inc.
    Inventors: Peter E. Zdenek, James T. VerShaw