Granted Patent
Utility
US 5,682,880 · App. 08/690,351
Laryngeal-mask airway with guide element, stiffener, and fiberoptic access
Inventor:
Archibald Ian Jeremy Brain
Patented Case
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Granted: Nov 4, 1997
Filed: Jul 26, 1996
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.