Granted Patent
Utility
US 4,383,573 · App. 06/343,142
Rotary regenerative air heater
Inventor:
Steven P. Wincze
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Jan 28, 1982
Inventor
Steven P. Wincze
Assignee (at issue)
Combustion Engineering, 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.