Granted Patent
Utility
US 4,320,167 · App. 06/094,261
Nonwoven fabric and method of production thereof
Inventor:
Marvin Wishman
Patented Case
View Patent ↗
Granted: Mar 16, 1982
Filed: Nov 19, 1979
Inventor
Marvin Wishman
Assignee (at issue)
Phillips Petroleum Company
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.