Granted Patent
Utility
US 5,437,270 · App. 08/024,721
Powder inhaler having a multi-positioned metering cup
Inventor:
Philip Braithwaite
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Jan 6, 1993
Inventor
Philip Braithwaite
Assignee (at issue)
Innovata Biomed Limited
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.