Granted Patent
Utility
US 5,080,950 · App. 07/185,912
Composite foam structural laminate
Inventor:
Donald D. Burke
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Apr 25, 1988
Inventor
Donald D. Burke
Assignee (at issue)
The Roll-o-Matic Chain 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.