Granted Patent
Utility
US 5,956,785 · App. 08/621,559
Lockable two frame convertible sofa bed
Inventor:
Robert Fireman
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Mar 25, 1996
Inventor
Robert Fireman
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.