Granted Patent
Utility
US 6,170,482 · App. 09/031,667
Inhalation apparatus
Inventor:
David Howlett
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Feb 27, 1998
Inventor
David Howlett
Assignee (at issue)
Bespak plc
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.