Granted Patent
Utility
US 4,422,892 · App. 06/260,507
Method of making a bonded corrugated nonwoven fabric and product made thereby
Inventor:
Derek Plant
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: May 4, 1981
Inventor
Derek Plant
Assignee (at issue)
Scott Paper Limited
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.