Granted Patent
Utility
US 6,516,805 · App. 08/828,523
Apparatus for prevention of snoring and improved breathing during sleep
Inventor:
W. Keith Thornton
Patented Case
View Patent ↗
Granted: Feb 11, 2003
Filed: Mar 31, 1997
Inventor
W. Keith Thornton
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.