Granted Patent
Utility
US 6,789,605 · App. 10/178,061
Sealing element for a regenerative heat exchanger
Inventor:
Jackie L. Kaser
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Jun 19, 2002
Inventor
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.