Granted Patent
Utility
US 4,698,276 · App. 06/866,799
Differential density fabric
Inventor:
Paul A. Duval
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: May 23, 1986
Inventor
Paul A. Duval
Assignee (at issue)
Guilford Mills, 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.