Granted Patent
Utility
US 5,791,434 · App. 08/752,608
Mobile warehouse ladder
Inventor:
Paul R. Swiderski
Patented Case
View Patent ↗
Granted: Aug 11, 1998
Filed: Nov 19, 1996
Inventor
Paul R. Swiderski
Assignee (at issue)
Emerson Electric Co.
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.