Granted Patent
Utility
US 4,986,589 · App. 07/397,122
Security file cabinet
Inventor:
Donald W. McNew
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Aug 22, 1989
Inventor
Donald W. McNew
Assignee (at issue)
LEGGETT & PLATT, 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.