Granted Patent
Utility
US 5,996,582 · App. 08/939,013
Tracheal assemblies
Inventor:
Christopher Stratton Turnbull
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Sep 26, 1997
Inventor
Christopher Stratton Turnbull
Assignee (at issue)
Smiths Industries Public Limited 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.