Granted Patent
Utility
US 5,358,070 · App. 08/148,389
Ladder top
Inventors:
Frederick J. Bartnicki, Harold L. Bernard, Robert D. Beggs, Donald M. Werner, Dale R. King
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Nov 8, 1993
Inventors
Frederick J. Bartnicki
Harold L. Bernard
Robert D. Beggs
Donald M. Werner
Dale R. King
Assignee (at issue)
Werner 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.