Granted Patent
Utility
US 5,655,597 · App. 08/498,529
Heat exchanger
Inventor:
Robin C. Vannucci, Jr.
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Jul 5, 1995
Inventor
Robin C. Vannucci, Jr.
Assignee (at issue)
Dixie Chemical Company
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.