Granted Patent
Utility
US 5,133,345 · App. 07/791,720
Neonatal closed system for involuntary aspiration and ventilation, and method
Inventor:
Richard C. Lambert
Patented Case
View Patent ↗
Granted: Jul 28, 1992
Filed: Nov 14, 1991
Inventor
Richard C. Lambert
Assignee (at issue)
Ballard Medical Products
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.