Granted Patent
Utility
US 4,985,945 · App. 07/326,369
Double-lock sofa sleeper mechanism
Inventor:
Danny C. Robinson
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Mar 21, 1989
Inventor
Danny C. Robinson
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.