Granted Patent
Utility
US 5,983,985 · App. 09/305,529
Air preheater heat transfer elements and method of manufacture
Inventors:
Wayne S. Counterman, Gary Brown, Tadek Casimir Brzytwa, Michael M. Chen, Scott Frederick Harting, James D. Seebald
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: May 5, 1999
Inventors
Wayne S. Counterman
Gary Brown
Tadek Casimir Brzytwa
Michael M. Chen
Scott Frederick Harting
James D. Seebald
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.