Granted Patent
Utility
US 5,873,920 · App. 08/721,454
Low restriction, high performance air filter
Inventors:
Johnny H. Wong, Louis Michael Dubowicz
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Sep 27, 1996
Inventors
Johnny H. Wong
Louis Michael Dubowicz
Assignee (at issue)
DANA LIMITED
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.