Granted Patent
Utility
US 5,560,057 · App. 08/269,557
Turning air mattress
Inventors:
Roger Taylor Madsen, Thomas H. Ludden
Patented Case
View Patent ↗
Granted: Oct 1, 1996
Filed: Jul 1, 1994
Inventors
Roger Taylor Madsen
Thomas H. Ludden
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.