Granted Patent
Utility
US 5,333,608 · App. 07/954,182
Endotracheal tube for face, chin and neck surgery
Inventor:
Christopher Cummins
Patented Case
View Patent ↗
Granted: Aug 2, 1994
Filed: Sep 30, 1992
Inventor
Christopher Cummins
Assignee (at issue)
Sherwood Medical Company
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.