Granted Patent
Utility
US 5,941,233 · App. 09/128,211
Indirect-fired heater with regeneration reclaim rotary heat exchanges
Inventors:
Daniel Grinols, Craig L. Carney, Ronald J. Prekker
Patented Case
View Patent ↗
Granted: Aug 24, 1999
Filed: Aug 3, 1998
Inventors
Daniel Grinols
Craig L. Carney
Ronald J. Prekker
Assignee (at issue)
Rupp Industries, 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.