Granted Patent
Utility
US 4,301,559 · App. 06/127,919
Sofa bed mechanism
Inventor:
J. Van Geenberghe
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Mar 6, 1980
Inventor
J. Van Geenberghe
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.