Granted Patent
Utility
US 5,519,903 · App. 08/382,424
Steel span for use in mattress foundation frames
Inventor:
Eugen Constantinescu
Patented Case
View Patent ↗
Granted: May 28, 1996
Filed: Feb 2, 1995
Inventor
Eugen Constantinescu
Assignee (at issue)
Ohio Mattress Company Components & Licensing Group
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.