Granted Patent
Utility
US 3,945,389 · App. 05/359,354
Foldable walker
Inventor:
Alfred A. Smith
Patented Case
View Patent ↗
Granted: Mar 23, 1976
Filed: May 11, 1973
Inventor
Alfred A. Smith
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.