Granted Patent
Utility
US 4,989,284 · App. 07/420,272
Cushion
Inventor:
Paul B. Gamm
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Oct 12, 1989
Inventor
Paul B. Gamm
Assignee (at issue)
The Kendall Company LP
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.