Granted Patent
Utility
US 5,427,117 · App. 08/129,598
Apparatus for prevention of snoring and improved breathing during sleep
Inventor:
W. Keith Thornton
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: Sep 29, 1993
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.