Granted Patent
Utility
US 4,722,572 · App. 06/861,351
Latch and release mechanism for wheelchair footrest
Inventor:
Dwight O. Sata
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: May 9, 1986
Inventor
Dwight O. Sata
Assignee (at issue)
Theradyne Corporation
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.