Granted Patent
Utility
US 5,255,391 · App. 07/892,269
Knee pad
Inventor:
Norman D. Levine
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Jun 2, 1992
Inventor
Norman D. Levine
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.