Granted Patent
Utility
US 5,873,359 · App. 08/353,508
Methods and devices for treating pulmonary vasoconstriction and asthma
Inventors:
Warren M. Zapol, Claes Frostell
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Dec 9, 1994
Inventors
Warren M. Zapol
Claes Frostell
Assignee (at issue)
The General Hospital Corporation
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.