Granted Patent
Utility
US 5,896,660 · App. 08/785,301
Method of manufacturing an evaporator tube
Inventor:
Klaus Rieger
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Jan 22, 1997
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.