Granted Patent
Utility
US 4,616,429 · App. 06/657,021
Disposable shoe cover
Inventor:
Robert Alcala
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Oct 2, 1984
Inventor
Robert Alcala
Assignee (at issue)
American Hospital Supply Corp.
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.