Granted Patent
Utility
US 6,223,370 · App. 09/442,923
Anti-roll off mattress construction
Inventor:
Earl S. Kluft
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Nov 18, 1999
Inventor
Earl S. Kluft
Assignee (at issue)
Chattam & Wells Mattress Company
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.