Granted Patent
Utility
US 6,219,490 · App. 09/202,332
Ventilation tube, particularly for medical devices
Inventors:
Lucio Gibertoni, Paolo Bergamaschi
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: May 10, 1999
Inventors
Lucio Gibertoni
Paolo Bergamaschi
Assignee (at issue)
MALLINCKRODT LLC
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.