Granted Patent
Utility
US 4,638,855 · App. 06/637,574
Heat exchange treatment of fluids
Inventors:
Carl L. Elmore, Ted M. Poulin, Mark D. Barrett
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Aug 3, 1984
Inventors
Carl L. Elmore
Ted M. Poulin
Mark D. Barrett
Assignee (at issue)
Kamyr, 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.