Granted Patent
Utility
US 5,143,779 · App. 07/288,834
Rebulkable nonwoven fabric
Inventors:
David D. Newkirk, Henry S. Ostrowski
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Dec 23, 1988
Inventors
David D. Newkirk
Henry S. Ostrowski
Assignee (at issue)
Fiberweb North America, 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.