Granted Patent
Utility
US 5,597,039 · App. 08/549,042
Evaporator tube
Inventor:
Klaus Rieger
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: Oct 27, 1995
Inventor
Klaus Rieger
Assignee (at issue)
High Performance Tube, Inc.
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.