Granted Patent
Utility
US 6,651,664 · App. 09/958,190
Tracheal tube with bulged cuff
Inventor:
Niels Lomholt
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Oct 3, 2001
Inventor
Niels Lomholt
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.