Granted Patent
Utility
US 4,880,271 · App. 07/289,539
Adjustable lumbar support
Inventor:
Lee Graves
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Dec 23, 1988
Inventor
Lee Graves
Assignee (at issue)
Wickes Manufacturing Co.
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.