Granted Patent
Utility
US 5,983,895 · App. 08/725,032
Tracheostomy tubes and assemblies
Inventor:
Mark W. Turner
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Oct 2, 1996
Inventor
Mark W. Turner
Assignee (at issue)
Smiths Industries PLC
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.