Granted Patent
Utility
US 6,596,049 · App. 09/441,209
Method and apparatus for spinning a web of mixed fibers, and products produced therefrom
Inventor:
Richard M. Berger
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Nov 16, 1999
Inventor
Richard M. Berger
Assignee (at issue)
Filtrona Richmond, 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.