Granted Patent
Utility
US 6,520,526 · App. 09/839,990
Wheel lock for a wheelchair
Inventor:
José Angel Otaola Amirola
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Apr 20, 2001
Inventor
José Angel Otaola Amirola
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.