Granted Patent
Utility
US 5,274,864 · App. 08/070,016
Knock down litter board
Inventor:
Roy Morgan
Patented Case
View Patent ↗
Granted: Jan 4, 1994
Filed: Jun 1, 1993
Inventor
Roy Morgan
Assignee (at issue)
AIR METHODS, LLC
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.