Granted Patent
Utility
US 5,628,360 · App. 08/604,646
Adjustable axial seal plates for rotary regenerative air preheaters
Inventors:
Mark E. Brophy, Glenn D. Mattison
Patented Case
View Patent ↗
Granted: May 13, 1997
Filed: Feb 21, 1996
Inventors
Mark E. Brophy
Glenn D. Mattison
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.