Granted Patent
Utility
US 6,450,581 · App. 09/676,254
Power legrest for a wheelchair
Inventor:
James M. Koerlin
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Sep 29, 2000
Inventor
James M. Koerlin
Assignee (at issue)
Sunrise Medical HHG, 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.