Granted Patent
Utility
US 4,793,371 · App. 07/125,933
Portable shelter
Inventors:
J. Richard O'Ferrell, Kevin Butts
Patented Case
View Patent ↗
Granted: Dec 27, 1988
Filed: Nov 27, 1987
Inventors
J. Richard O'Ferrell
Kevin Butts
Assignee (at issue)
Ultra Shades, 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.