Granted Patent
Utility
US 6,375,169 · App. 09/627,621
Mattress spring cushion assembly with combination of right-hand and left-hand spring units
Inventors:
Kevin N. McCraw, Stuart Spiller
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Jul 28, 2000
Inventors
Kevin N. McCraw
Stuart Spiller
Assignee (at issue)
HICKORY SPRINGS MANUFACTURING 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.