Granted Patent
Utility
US 5,911,271 · App. 09/140,883
Floating bypass seal for rotary regenerative heat exchangers
Inventors:
Kurt M. Fierle, Robin B. Rhodes
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Aug 27, 1998
Inventors
Kurt M. Fierle
Robin B. Rhodes
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.