Granted Patent
Utility
US 4,790,553 · App. 07/121,126
Lightweight wheelchair having swing-away footrest assembly
Inventor:
James Okamoto
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Nov 16, 1987
Inventor
James Okamoto
Assignee (at issue)
Motion Design, 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.