Granted Patent
Utility
US 4,738,883 · App. 06/880,129
Wrap around heat shrinkable closure with flexible extension
Inventor:
Richard A. Young
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Jun 30, 1986
Inventor
Richard A. Young
Assignee (at issue)
Sigmaform Corporation
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.