Granted Patent
Utility
US 4,342,813 · App. 05/886,484
Method for the production of a fused nonwoven fabric
Inventor:
Wayne K. Erickson
Patented Case
View Patent ↗
Granted: Aug 3, 1982
Filed: Mar 14, 1978
Inventor
Wayne K. Erickson
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.