Granted Patent
Utility
US 4,850,065 · App. 07/223,952
Sofa bed mechanism with safety lock out feature
Inventors:
Paul R. Swiderski, Theodore J. Blevins
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Jul 25, 1988
Inventors
Paul R. Swiderski
Theodore J. Blevins
Assignee (at issue)
LEGGETT & PLATT, 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.