Granted Patent
Utility
US 6,439,232 · App. 09/289,319
Laryngeal mask airway device
Inventor:
Archibald Ian Jeremy Brain
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Apr 9, 1999
Inventor
Archibald Ian Jeremy Brain
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.