Granted Patent
Utility
US 6,055,984 · App. 08/964,664
Endotracheal tube construction
Inventor:
Archibald I. J. Brain
Patented Case
View Patent ↗
Granted: May 2, 2000
Filed: Nov 5, 1997
Inventor
Archibald I. J. 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.