Granted Patent
Utility
US 6,408,941 · App. 09/898,774
Folded fin plate heat-exchanger
Inventor:
Jon Zuo
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Jun 29, 2001
Inventor
Jon Zuo
Assignee (at issue)
Thermal Corp.
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.