Granted Patent
Utility
US 6,000,497 · App. 08/780,875
Detachable tray for step stool
Inventors:
James M. Kain, Raymond P. King
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Jan 9, 1997
Inventors
James M. Kain
Raymond P. King
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.