Granted Patent
Utility
US 4,748,994 · App. 06/819,703
Reversible walker device
Inventors:
Jim Schultz, Michael Doom
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: Jan 17, 1986
Inventors
Jim Schultz
Michael Doom
Assignee (at issue)
Guardian Products, 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.