Granted Patent
Utility
US 6,026,933 · App. 09/151,606
Step stool
Inventors:
Raymond P. King, Charles E. Schroer
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Sep 11, 1998
Inventors
Raymond P. King
Charles E. Schroer
Assignee (at issue)
Cosco, 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.