Granted Patent
Utility
US 5,456,310 · App. 08/286,781
Rotary regenerative heat exchanger
Inventors:
Mark E. Brophy, Wayne S. Counterman
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: Aug 5, 1994
Inventors
Mark E. Brophy
Wayne S. Counterman
Assignee (at issue)
ABB Air Preheater 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.