Granted Patent
Utility
US 4,990,298 · App. 07/213,687
Method of forming a wrap around heat shrinkable closure with flexible extension
Inventor:
Richard A. Young
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Apr 18, 1988
Inventor
Richard A. Young
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.