Granted Patent
Utility
US 4,593,690 · App. 06/625,822
Endotracheal tubes with improved proximal end connector units
Inventors:
David S. Sheridan, Isaac S. Jackson
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Jun 28, 1984
Inventors
David S. Sheridan
Isaac S. Jackson
Assignee (at issue)
David R. Sheridan
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.