Granted Patent
Utility
US 5,694,920 · App. 08/788,921
Inhalation device
Inventors:
Andrew L. Abrams, Anand V. Gumaste
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Jan 24, 1997
Inventors
Andrew L. Abrams
Anand V. Gumaste
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.