Granted Patent
Utility
US 5,881,799 · App. 08/017,000
Perimeter sealing element for regenerative heat exchanger
Inventors:
Wayne R. Kozacka, Jackie L. Kaser
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Feb 2, 1998
Inventors
Wayne R. Kozacka
Jackie L. Kaser
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.