Granted Patent
Utility
US 5,604,021 · App. 08/363,260
Multi-layer support pad having regions of differing firmness
Inventor:
Robert F. Wagner
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Dec 23, 1994
Inventor
Robert F. Wagner
Assignee (at issue)
Ohio Mattress Company Licensing and Components 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.