Granted Patent
Utility
US 5,947,115 · App. 08/909,118
Gas flow pressure filter
Inventors:
Richard J. Lordo, John Fiore
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Aug 11, 1997
Inventors
Richard J. Lordo
John Fiore
Assignee (at issue)
Respironics, 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.