Granted Patent
Utility
US 6,589,423 · App. 09/647,229
Filtration system with modularized energy recovery subsystem
Inventor:
Dennis Chancellor
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Nov 15, 2000
Inventor
Dennis Chancellor
Assignee (at issue)
NATE International
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.