Granted Patent
Utility
US 6,584,977 · App. 09/824,291
Combined patient interface and exhaust assembly
Inventor:
Andrew Serowski
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Apr 2, 2001
Inventor
Andrew Serowski
Assignee (at issue)
Respironics, Inc.
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.