Granted Patent
Utility
US 6,629,433 · App. 09/844,254
Process and apparatus for heat exchange
Inventors:
Horst Corduan, Dietrich Rottmann, Karl Leibl
Patented Case
View Patent ↗
Granted: Oct 7, 2003
Filed: Apr 30, 2001
Inventors
Horst Corduan
Dietrich Rottmann
Karl Leibl
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.