Granted Patent
Utility
US 4,348,014 · App. 06/157,131
Torsion bar spring auxiliary panel for bedding unit
Inventor:
Stanley Litkewycz
Patented Case
View Patent ↗
Granted: Sep 7, 1982
Filed: Jun 6, 1980
Inventor
Stanley Litkewycz
Assignee (at issue)
Lear Siegler, Inc.
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.