Granted Patent
Utility
US 4,766,976 · App. 07/090,754
Ladder leg extender and leveler
Inventor:
Claude R. Wallick, Jr.
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Aug 28, 1987
Inventor
Claude R. Wallick, Jr.
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.