Granted Patent
Utility
US 4,150,676 · App. 05/592,226
Endotracheal tubes with intubation direction control means
Inventor:
Isaac S. Jackson
Patented Case
View Patent ↗
Granted: Apr 24, 1979
Filed: Jul 1, 1975
Inventor
Isaac S. Jackson
Assignee (at issue)
National Catheter Corp.
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.