Granted Patent
Utility
US 5,567,010 · App. 08/297,312
Adjustable lumbar support
Inventor:
Michael Stephen Sparks
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Aug 29, 1994
Inventor
Michael Stephen Sparks
Assignee (at issue)
Bostrom Seating, Inc.
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.