Granted Patent
Utility
US 5,820,645 · App. 08/862,721
Pleatable nonwoven composite article for gas filter media
Inventor:
William F. Murphy
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: May 23, 1997
Inventor
William F. Murphy
Assignee (at issue)
Reemay, 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.